%0 Journal Article %A V. G. Romanov %A T.V. Bugueva %T The problem of determining the coefficient for a nonlinear term of a quasi-linear wave equation %J Sibirskij žurnal industrialʹnoj matematiki %D 2022 %P 154-169 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJIM_2022_25_3_a12/ %G ru %F SJIM_2022_25_3_a12