Complex structures in (deductive) database systems: Variables and open property sets
1986 ◽
Vol 3
(1)
◽
pp. 55-67
◽
Keyword(s):
2001 ◽
Vol 3
(2)
◽
pp. 198-224
◽
1995 ◽
Vol 23
(2)
◽
pp. 125-149
◽
1994 ◽
Vol 14
(2)
◽
pp. 117-141
◽
Keyword(s):