Optimalʹnoe upravlenie, different︠s︡ialʹnye uravnenii︠a︡ i gladkai︠a︡ optimizat︠s︡ii︠a︡ : sbornik stateĭ : k 70-letii︠u︡ so dni︠a︡ rozhdenii︠a︡ chlena-korrespondenta RAN Revaza Valerianovicha Gamkrelidze - Gamkrelidze, R. V.; Mishchenko, E. F. (Evgeniĭ Frolovich) (Trudy Matematicheskogo instituta imeni V.A. Steklova, 1998)