Massalitina, E. V. The Goursat problem with impulse perturbations. (Ukrainian. English summary) Zbl 1289.35223 Visn. Khark. Univ., Ser. Mat. Prykl. Mat. Mekh. 1081, No. 68, 21-32 (2013). Summary: An estimate is derived for the function of two variables satisfying the Goursat problem with the data on the characteristics and we receive a pulse perturbation at defined curves. MSC: 35L70 Second-order nonlinear hyperbolic equations 35A23 Inequalities applied to PDEs involving derivatives, differential and integral operators, or integrals 58J45 Hyperbolic equations on manifolds Keywords:integral inequalities; hyperbolic equation; impulse perturbation PDFBibTeX XMLCite \textit{E. V. Massalitina}, Visn. Khark. Univ., Ser. Mat. Prykl. Mat. Mekh. 1081, No. 68, 21--32 (2013; Zbl 1289.35223)