[en] It is commonly accepted that candidates to very high energy γ-ray sources are neutron stars (NSs), binary systems, black holes, etc. Close binary systems containing a normal hot star and a NS (or a black hole) form an important class of very high energy γ-ray sources. Such systems are variable in any region of the electromagnetic spectrum and they enable us to study various stages of stellar evolution, accretion processes, mechanisms of particle acceleration etc. Phenomena connected with this class of very high energy γ-ray sources are discussed, the particular emphasis has been placed on the TeV region. (author). Refs, 7 figs, 2 tabs