D. Bainov has written:
'Proceedings of the Seventh International Colloquium on
Differential Equations'
'Proceedings of the International Colloquium on Differential
Equations , Proceedings of the Eighth International Colloquium on
Differential Equations'
'Proceedings of the Sixth International Colloquium on
Differential Equations'
'Proceedings of the International Colloquium on Differential
Equations'