1. (EN) OPTICAL STRUCTURES IN RELATIVITY, Warsaw, 2015 - notes for lecture given at the Conference 100 years of General Relativity
  2. (PL) Clifford's algebra and spinors, Warsaw, 2010 
  3. (PL) Spinory i twistory, 2009 - lecture given at the seminar of Theory of Relativity and Gravity
  4. (PL), Why science will not replace religion, Krakow, 2008 - lecture given at a Conference "Will science replace religion?", movie (PL)
  5. (EN) Laudatio for Roger Penrose on the occasion of  conferring on him the title of Doctor Honoris Causa of Warsaw University, Warsaw, 2005
  6. (PL) Spinors and twistors, Warsaw, 2003/2004 - lecture at Physics Faculty, Warsaw University
  7. (EN) TWO APPROACHES TO SPINOR FIELDS ON MANIFOLDS, Syracuse, 2003 - transparencies prepared for a talk at the Peter Gabriel Bergmann Memorial Symposium
  8. (EN) Einstain and the Geometrization of Physics, Rome, 1980 - lecture summary for International Conference "Aspetti matematici della teoria della relativita"
  9. (EN) Theory of Gravitational Waves and Radiation, Erice, 1975 - summary of lecture given at IV Course of the International School of Cosmology and Gravitation
  10. (PL) Waves and gravitational radiation, Warsaw, 1974/1975 - lecture at Physics Faculty, Warsaw University
  11. (EN) Gravitational waves and radiation, London, 1965 - lecture for the Conference of Theories of Graviation
  12. (EN) Elementary approach to the idea of general relativity
  13. (PL) Theory of relativity, Warsaw, 1962/1963 - lecture at Physics Faculty, Warsaw University