Theoretical Physics, in particular General Relativity and Mathematical Physics. In these fields more than 100 original research papers published in specialized international journals.

  • Book “Motion and Relativity” Pergamon Press, 1960, in collaboration with Prof. Infeld who was a collaborator in turn and co-author of Einstein. Book was aslo translated into Russian.
  • Cycle of works dedicated to solutions of type D: Ann. Phys. 90 (1975), 190-223; Ann. Phys. 98 (1976), 89-127 and Ann. N.Y. Academy 262 (1975), 246-252.
  • Cycle of works dedicated to heavenly manifolds: H-J. Math. Phys. 16 (1975), 2403-2407, 17 (1976), 585-596, 17 (1976). 2203-2206.
  • Cycle of works dedicated to hyper-heavenly manifolds: Phys. Rev. Lett. 37 (1976), 493-495; J. Math. Phys. 17 (1976). 2207-2214.