%0 Journal Article %A E. Sh. Gutshabash %T Moutard transformation and its application to some physical problems.~I. The case of two independent variables %J Zapiski Nauchnykh Seminarov POMI %D 2012 %P 100-124 %V 398 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2012_398_a5/ %G ru %F ZNSL_2012_398_a5