KILLING VECTORS OF VACUUM SPACE TIMES AND ELECTROMAGNETIC FOUR POTENTIALS ArticleHorský J., Mitskievitch N.V.Czechoslovak Journal of Physics. Vol. 39. 1989. P.. 957-961
SECOND-CLASS CURRENTS AND THE MUON-NEUTRINO REST MASS IN THE MUON CAPTURE BY 6LI AND 3HE ArticleKathat C.L., Samsonenko N.V.Nuclear Physics, Section A. Vol. 500. 1989. P.. 669-680