Published in: Monografie matematyczne ; 43

Published in: Ergebnisse der Mathematik und ihrer Grenzgebiete ; NF,55

Published in: Mathematics in science and engineering ; 55

Published in: Australian Mathematical Society: Australian Mathematical Society lecture series ; 10

Published in: Mathematics and its applications / East European series ; 53

Published in: Studies in mathematics and its applications ; 8

Published in: Springer tracts in natural philosophy ; 2

Published in: North-Holland mathematics studies ; 205

Published in: Mathematics in science and engineering ; v. 197

Published in: Studies in mathematics and its applications ; 8

Published in: Mathematische Zeitschrift, 127 (2), 157–164 ; ISSN: 0025-5874, 1432-1823

Published in: crll

Published in: Mathematische Zeitschrift

Published in: Numerische Mathematik

Published in: Proceedings of the American Mathematical Society

Published in: Proceedings of the American Mathematical Society