Ehrenpreis, Leon, author
John Wiley & Sons, 1970
Buku Teks
Wermer, John
Springer-Verlag , 1976
Buku Teks
Fischer, Wolfgang, author
[, Vieweg+Teubner Verlag], 2012
eBooks
Besov, Oleg V.
V. H. Winston & Sons , 1978 dan 1979
Buku Teks
University of Notre Dame, 1992
Buku Teks