1
by Cyvin, S. J., Gutman, I.
Published 1988
Springer Berlin Heidelberg

2
by Cyvin, S. J., Brunvoll, J., Cyvin, B. N.
Published 1991
Springer Berlin Heidelberg

3
by Cyvin, S. J., Brunvoll, J., Cyvin, B. N., Chen, R. S.
Published 1994
Springer Berlin Heidelberg