THE QUASIPROBABILITY OPERATOR OF POSITIONS AND MOMENTA IN QUANTUM MECHANICS ArticleZaparovannyi Yu.I., Kuryshkin V.V., Lyabis I.A.Soviet Physics Journal. Том 21. 1978. С. 336-339
THE CORRESPONDENCE PRINCIPLE BETWEEN CLASSICAL AND QUANTUM QUANTITIES ArticleZaparovannyi Yu.I.Soviet Physics Journal. Том 17. 1974. С. 762-766