Covariance structures
Keyword(s):
2010 ◽
Vol 30
(3-4)
◽
pp. 385-422
◽
1993 ◽
Vol 4
(2)
◽
pp. 111-123
◽
1982 ◽
pp. 72-141
◽
Keyword(s):
1988 ◽
pp. 207-230
◽
2014 ◽
Vol 44
(1)
◽
pp. 43-71
◽