Speciality:
01.01.02 (Differential equations, dynamical systems, and optimal control)
Main publications:
Kraevye zadachi dlya obyknovennogo differentsialnogo uravneniya vtorogo poryadka / A. Ya. Lepin, L. A. Lepin; Latv. gos. un-t im. P. Stuchki. - Riga : Zinatne, 1988. - 210 s.; ISBN 5-7966-0142-3
