THE STRUCTURE OF A CONTROLLABILITY REGION Article ZVERKIN A.M., ROZOVA V.N. Differential Equations. Vol. 18. 1982. P. 186-190
CONSTRUCTION OF DIFFERENTIAL-EQUATION SYSTEMS IN 3-DIMENSIONAL SPACE FROM PROPERTIES OF THEIR INTEGRAL CURVES Article VOLKOV S.V. Differential Equations. Vol. 18. 1982. P. 409-414
DETERMINATION OF THE FORCE FUNCTION FROM A GIVEN INTEGRAL OF THE EQUATION OF MOTION Article GALIULLIN A.S. Differential Equations. Vol. 18. 1982. P. 530-532
INEQUALITIES FOR VALUES OF DIFFERENTIAL-OPERATORS ON ALGEBRAIC POLYNOMIALS ON A SPHERE Article ZHIDKOV G.V. Differential Equations. Vol. 17. 1981. P. 329-336