Non-linear partial differential operators and quantization procedures : proceedings of a workshop held at Clausthal, Federal Republic of Germany, 1981 / edited by S.I. Andersson and H.-D. Doebner. (Lecture notes in mathematics ; 1037)
Non-linear partial differential operators and quantization procedures : proceedings of a workshop held at Clausthal, Federal Republic of Germany, 1981 / edited by S.I. Andersson and H.-D. Doebner.