1
by NAVARATNAM
Published 1997
2
Published 1976
3
Published 1980
4
by THEIL
Published 1958
5
Published 1996
7
by NAVARATNAM
Published 1998
8
by CLIFFORD
Published 1997
9
by NAVARATNAM
Published 1999
10
by PRAMANIK
Published 1997
11
by PRAMANIK
Published 1997
13
Published 1994
14
by NAVARATNAM
Published 2001
15
Published 1990
18
Published 2003
19
by NAVARATNAM
Published 2003
20
by EL-Erian
Published 2016