J. Łażewski, P. Piekarz, P.T. Jochym, M. Sternik, K. Parlinski, and M. Litwiniszyn, First-principles calculations as an alternative way to study nanosystems (plakat) International Conference on Nanoscience + Technology (ICN+T12), Paryż, Francja, 23–27 lipca 2012.
J. Łażewski, Phonon induced phase transition in magnetocalor ic MnAs (referat) Solid-Solid Phase Transformation in Inorganic Materials Conference (PTM2010), Avignon, Francja, 6–11 czerwca 2010.
W. Szuszkiewicz, J. Łażewski, B. Hennion, and B. Witkowska, Is the enigma of the anomalous curvature of LO phonon branches for some binary semiconductor compounds finally solved? 14th International Conference on II –VI Compounds, St. Petersburg, Rosja, 23–28 sierpnia 2009.
J. Łażewski and M. Litwiniszyn, Phonons in kaneit under pressure (plakat) Workshop on ab initio calculations in geosciences, Kraków, Polska, 22–25 października 2008.
J. Łażewski, CuAu impurity in CuInS2 by ab initio calculations (referat) 16th International Conference on Ternery and Multinary Compounds, Berlin, Niemcy, 15–19 września 2008.
J. Łażewski, P. Piekarz, A.M. Oleś, J. Korecki, and K. Parlinski, Phonons of iron monolayer on W(110) (plakat) 2nd Workshop on ab initio phonon calculations, Kraków, Polska, 6–8 grudnia 2007.
J. Łażewski and J. Korecki, Phonon Density of States at Fe (110) and Fe (001) Surfaces (plakat) ECOSS 24 European Conference on Surface Science, Paryż, Francja, 4–8 września 2006.
J. Łażewski, Ab initio study of vibrational properties of iron (100) and (110) surfaces (plakat) Workshop on diffusion, phonons and magnetization dynamics on surfaces and multilayers, Kraków, Polska, 30–31 maja 2006.
J. Łażewski, What differs simulated (110) surface Fe- monolayer from the real one? – comparative analysis of ab initio study vs. NIS experiment (referat) Workshop on diffusion, phonons and magnetization dynamics on surfaces and multilayers, Kraków, Polska, 30–31 maja 2006.
J. Łażewski, Stability limits for CuAu phase of CuInS2 (referat) 21st General Conference of the EPS Condensed Matter Division, Drezno, Niemcy, 27–31 marca 2006.
J. Łażewski, P. Piekarz, and K. Parlinski, Second-order phase transition within quasi-harmonic approximation (plakat) Workshop on ab initio phonon calculations, Kraków, Polska, 2–4 grudnia 2004.
J. Łażewski, H. Neumann, and K. Parlinski, First-principles study of phonon-based properties of magnetic CuFeS2 (plakat) e-MRS Fall Meeting, Warszawa, Polska, 6–10 września 2004.
J. Łażewski, P. Piekarz, and K. Parlinski, First-Principles Phase Diagram of AgGaSe2 (plakat) Europhysics Conference on Computatipnal Physics, Genova, Włochy, 1–4 września 2004.
J. Łażewski, P. Piekarz, P.T .Jochym, M. Sternik, and K. Parlinski, First-Principles Studies of Structural Phase Transitions (plakat) XVI Polish – Czech Seminar on Structural and Ferroelectric Phase Transitions, Wierzba, Polska, 13–15 maja 2004.
A.M. Yaremko, E.V. Mozdor, K. Parlinski, and J. Łażewski, Features of Raman Scattering of the Cu–In–S (Se) Compounds. Promising Materials for Solar Cell (plakat) IX International Conference on Physics and Technology of Thin Films, Ivano-Frankivsk, Ukraina, 19–24 maja 2003.
J. Łażewski, P.T. Jochym, and K. Parlinski, First Principles Studies of Structural, Electronic, Magnetic, Dynamical and Elastic Properties of some Chalcopyrite Semiconductors (plakat) XXXI International School on the Physics of Semiconducting Compounds, Ustroń-Jaszowiec, Polska, 7–14 czerwca 2002.
J. Łażewski and K. Parlinski, Ab initio studies of phonons in chalcopyrite crystals. Dynamical properties of CuInSe2 AgGaX2 (X=S, Se, Te) and ZnSnP2 (plakat) 5th International School and Symposium on Synchrotron Radiation in Natural Science, Ustroń-Jaszowiec, Polska, 12–16 czerwca 2000.
J. Łażewski and K. Parlinski, Lattice dynamics of AgGaS2 chalcopyrite crystal from the ab initio calculations (plakat) XXVIII International School on Physics of Semiconducting Compounds, Ustroń-Jaszowiec, Polska, 7–11 czerwca 1999.
J. Łażewski and K. Parlinski, Lattice dynamics of HgSe and AgGaSe2 from first-principle calculations (plakat) Xth Workshop on Quantum Atomic and Molecular Tunneling in Solids, Kraków, Polska, 26–30 września 1999.
J. Łażewski and K. Parlinski, Lattice dynamics of AgGaS2 chalcopyrite crystal from the ab initio calculations (plakat) XXVIII International School on Physics of Semiconducting Compounds, Ustroń-Jaszowiec, Polska, June 6–11, 1999.
J. Łażewski and K. Parlinski, Phonons in chalcopyrite structure crystals within the force field approach (plakat) Molecular Simulation (MSI) Workshop, Warszawa, Polska, 29 stycznia 1998.
A. Kisiel, J. Łażewski, J. Konior, M. Zimnal-Starnawska, E. Buratini, and A. Mycielski, Site occupation preferences in CdMnTeSe quaternary alloys. EXAFS data analysis (plakat) 3rd International School and Symposium on Synchrotron Radiation in Natural Science, Ustroń-Jaszowiec, Polska, 31 maja–8 czerwca 1996.
J. Łażewski, Manganese distribution in CdMnTeSe crystals. EXAFS data analysis (plakat) XXV International School on Physics of Semiconducting Compounds, Ustroń-Jaszowiec, Polska, 27–31 maja 1996.
J. Łażewski, Random microscopic model of quaternary alloys (plakat) XII Polish–Czech Seminar on Structural and Ferroelectric Phase Transitions in Crystals, Jurata, Polska, 15–19 maja 1996.
J. Łażewski, M. Zimnal-Starnawska, A. Kisiel, F. Boscherini, S. Pascarelli, W. Giriat, K sulphur edge in Zn1-xMnxS – EXAFS data analysis (plakat) 3rd National Symposium of Synchrotron Radiation Users, Warszawa, Polska, 6–7 czerwca 1995.
E. Rokita, C. Hermes, H.-F. Nolting, and J. Łażewski, Thermal conversion of Sr-contaminated brushite into calcium pyrophosphate – EXAFS studies of Sr coordination (plakat) 2nd International School and Symposium on Synchrotron Radiation in Natural Science, Ustroń-Jaszowiec, Polska, 18–26 maja 1994.
M. Zimnal-Starnawska, J. Łażewski, A. Kisiel, F. Boscherini, S. Pascarelli, and W. Giriat, EXAFS studies of Zn1-xMnxS ternary compound (plakat) 2nd International School and Symposium on Synchrotron Radiation in Natural Science, Ustroń-Jaszowiec, Polska, 18–26 maja 1994.
