Fardigola, L. V. Transformation operators in the problems of controllability for the degenerate wave equation with variable coefficients. (English. Ukrainian original) Zbl 1454.93110 Ukr. Math. J. 70, No. 8, 1300-1318 (2019); translation from Ukr. Mat. Zh. 70, No. 8, 1128-1142 (2018). MSC: 93C20 93B05 35L10 PDFBibTeX XMLCite \textit{L. V. Fardigola}, Ukr. Math. J. 70, No. 8, 1300--1318 (2019; Zbl 1454.93110); translation from Ukr. Mat. Zh. 70, No. 8, 1128--1142 (2018) Full Text: DOI
Fardigola, Larissa V. Transformation operators in controllability problems for the wave equations with variable coefficients on a half-axis controlled by the Dirichlet boundary condition. (English) Zbl 1322.93018 Math. Control Relat. Fields 5, No. 1, 31-53 (2015). MSC: 93B05 35B30 35L05 35L20 PDFBibTeX XMLCite \textit{L. V. Fardigola}, Math. Control Relat. Fields 5, No. 1, 31--53 (2015; Zbl 1322.93018) Full Text: DOI