Compact molecular codes for annulenes, azaannulenes, annulenoannulenes, aza-annulenoannulenes, cyclazines and aza-cyclazines - Nikolić, Sonja (Array, 1990)
"World Congress in Theoretical Organic Chemistry", Budapest, 12-19.8.1987. and "Symposium on Computational Graph Theory and Combinatorics", Los Angeles, 25- 30.9.1988