61
by Ochkin
Published 2009
Wiley-Blackwell

62
by Masujima
Published 2009
Wiley-Blackwell

63
by Audretsch
Published 2007
Wiley-Blackwell

64
by Audretsch
Published 2005
Wiley-Blackwell

65
by Klages
Published 2008
Wiley-Blackwell

66
by Mahnke
Published 2008
Wiley-Blackwell

67
by Würfel
Published 2005
Wiley-Blackwell

68
by Singh
Published 1996
Wiley-Blackwell

69
by Braunstein
Published 1999
Wiley-Blackwell

70
by Braun
Published 2007
Wiley-Blackwell

71
by Bruß
Published 2006
Wiley-Blackwell

72
by Kusse
Published 2006
Wiley-Blackwell

73
by Trigg
Published 2005
Wiley-Blackwell

74
by Takács
Published 2003
Wiley-Blackwell

75
by Weise
Published 1999
Wiley-Blackwell

76
by Courant
Published 1989
Wiley-Blackwell

77
by Courant
Published 1989
Wiley-Blackwell

78
by Singh
Published 1999
Wiley-Blackwell

79
by Kalos
Published 1986
Wiley-Blackwell

80
by Cohen-Tannoudji
Published 1997
Wiley-Blackwell