TY - JOUR AU - I. V. Lisachenko AU - V. I. Sumin TI - On singular controls of a~maximum principle for the problem of the Goursat--Darboux system optimization JO - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki PY - 2015 SP - 483 EP - 491 VL - 25 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VUU_2015_25_4_a4/ LA - ru ID - VUU_2015_25_4_a4 ER -