Indagationes Mathematicae. New Series

1995. V. 6 1,2,3,4

1994. V. 5 1,2,3,4

1993. V. 4 1,2,3,4

1992. V. 3 1,2,3,4

1991. V. 2 1,2,3,4

1990. V. 1 1,2,3,4