Sh:b

Bib entry
@book{Sh:b,
 author = {Shelah, Saharon},
 title = {{Proper forcing}},
 series = {Lecture Notes in Mathematics},
 volume = {940},
 year = {1982},
 pages = {xxix+496},
 isbn = {3-540-11593-5},
 publisher = {Springer-Verlag, Berlin-New York},
 mrnumber = {675955},
 mrclass = {03-02 (03E35 03E40 03E50)}
}