Danilin, A. R. Asymptotics of the solution in a problem of optimal boundary control of a flow through a part of the boundary. (English. Russian original) Zbl 1343.49006 Proc. Steklov Inst. Math. 292, Suppl. 1, S55-S66 (2016); translation from Tr. Inst. Mat. Mekh. (Ekaterinburg) 20, No. 4, 116—127 (2014). MSC: 49J20 35J15