Elliptic Regularization for Symmetric Positive Systems
Leonard Sarason
Indiana University Mathematics Journal
1967
text
pdf
10.1512/iumj.1967.16.16053
10.1512/iumj.1967.16.16053
en
Indiana Univ. Math. J. 16 (1967) 807 - 827
state-of-the-art mathematics
http://iumj.org/access/