Contacts
Direct contacts with the Editors-in-Chief:
Sava Grozdev, Professor, DSc, Academician of Bulgarian Academy of Sciences and Arts
e-mail: sava.grozdev@gmail.com
Hiroshi Okumura, Professor, Ph.D. Maebashi Gunma, Japan
e-mail: hokmr@yandex.com
Veselin Nenkov, Professor, PhD “Nikola Vaptsarov” Naval Academy – Varna, Bulgaria
e-mail: vnenkov@mail.bg