MODELING SOME MATHEMATICAL OBJECTS AND OPERATIONS ON THEM WITH AN EXPANDED RELATIONAL DATA MODEL Статья LOZOVSKII N.D., TOLMACHEV I.L. Programming and computer software. Том 17. 1991. С. 32-37
SOME CLINICAL AND IMMUNOGENETIC CHARACTERISTICS OF REACTIVE ARTHRITIS IN CHILDREN Статья ARTAMONOVA V.A., AKHMADI S., POLYANSKAYA I.S. Terapevticheskii Arkhiv. Том 63. 1991. С. 22-24