Alexander Mladenov is an aerospace & defence author, journalist and photographer, based in Sofia, Bulgaria. A graduate of the Technical University of Sofia, he is also the author of a series of books on Soviet/Russian modern military aircraft and this is his third book for Helion.
Krassimir Grozev is is an aviation & defence author and journalist, based in Sofia, Bulgaria. His interests are in the history of air warfare, modern aircraft technologies and airborne weapons. This is his first book for Helion.
Evgeni Andonov is an aviation journalist and historian, based in Sofia, Bulgaria. He is a graduate of the Technical University of Sofia and his special interests include deep research into little-known moments in the history and operations of the Bulgarian Air Force, mostly between the 1920s to the 1980s. This is his second book for Helion.