Contacts

Lyubomir Penev               Copied!

Founder

Pensoft Publishers & Bulgarian Academy of Sciences
Sofia, Bulgaria
https://www.pensoft.net

Teodor Georgiev                   Copied!

Technical editor

Pensoft Publishers
Sofia, Bulgaria
https://www.pensoft.net

Editorial office

Prof. Georgi Zlatarski Street 12
1700 Sofia, Bulgaria
Tel.: +359-2-8704281
Fax: +359-2-8704282
E-mail: ab@pensoft.net