81
by Chakravarti
Published 1950
82
83
by Gilmore
Published 1974
84
85
86
Published 1976
87
by Arasaratnam
Published 1958
88
by Hare
89
Published 1911
90
Published 1987
91
Published 2003
92
by Bell
Published 1981
93
by Edmondson
Published 2002
94
Published 1997
95
Published 2004
96
Published 1978
97
by Ho
Published 2003
98
Published 2004
99
Published 2004
100