%0 Journal Article %A V. Komornik %A P. Loreti %T Observability of square membranes by Fourier series methods %J Vestnik Ûžno-Uralʹskogo gosudarstvennogo universiteta. Seriâ, Matematičeskoe modelirovanie i programmirovanie %D 2015 %P 127-140 %V 8 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/VYURU_2015_8_3_a7/ %G en %F VYURU_2015_8_3_a7