41
by Stillwell, John
Published 1998
Springer New York

42
by Ribenboim, Paulo
Published 1996
Springer New York

43
by Redfern, Darren, Chandler, Edgar
Published 1996
Springer New York

44
by Alperin, J. L., Bell, Rowen B.
Published 1995
Springer New York

45
by Roman, Steven
Published 1995
Springer New York

46
by Dubinsky, Ed, Leron, Uri
Published 1994
Springer New York

47
by Fine, Benjamin, Rosenberger, Gerhard
Published 1997
Springer New York

48
by Washington, Lawrence C.
Published 1997
Springer New York

49
by Cornell, Gary
Published 1997
Springer New York

50
by Jain, S. K.
Published 1997
Birkhäuser Boston

51
by Dungey, Nick, Elst, A. F. M. ter, Robinson, Derek W.
Published 2003
Birkhäuser Boston

52
by Hochster, M.
Published 1989
Springer New York

53
Published 1990
Birkhäuser Boston

54
by Stillwell, John
Published 1993
Springer New York

55
by Banchoff, Thomas, Wermer, John
Published 1992
Springer US

56
by Anderson, Frank W., Fuller, Kent R.
Published 1992
Springer New York

57
by Terras, Audrey
Published 1985
Springer New York

58
by Berndt, Bruce C.
Published 1989
Springer New York

59
by Buell, Duncan A.
Published 1989
Springer New York

60
by Bressoud, David M.
Published 1989
Springer New York