Danilin, A. R.; Kovrizhnykh, O. O. Asymptotics of the optimal time in a time-optimal problem with two small parameters. (English. Russian original) Zbl 1321.49002 Proc. Steklov Inst. Math. 288, Suppl. 1, S46-S53 (2015); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 20, No. 1, 92-99 (2014). MSC: 49J15 49K15 34H05 93C15 93C73 70Q05