ISBN 0821887947 books & textbook
Regularity of Free Boundaries in Obstacle-type Problems (Graduate Studies in Mathematics) (Graduate Studies in Mathematics, 136)
Arshak Petrosyan Henrik Shahgholian Nina Uraltseva
American Mathematical Society /2012-07-11 Hardcover / 221 Pages
isbn-10: 0821887947 / isbn-13: 9780821887943