TY - BOOK TI - Obstacle problems in mathematical physics T2 - North-Holland mathematics Studies SN - 0444701877 (pbk.) PY - 1987/// CY - Amsterdam ; | New York : | New York, N.Y. PB - North-Holland ; | Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co. N1 - Includes index ER -