Journal article (2015) - M Mihaylov (author), K Chakarova (author), K Hadjiivanov (author), S Andonova (author), N Drenchev (author), E Ivanova (author), Evgeny A. Pidko (author), Anahid Sabetghadam Esfahani (author), A. Sabetghadam (author), A. Sabetghadam Esfahani (author), Anahid Sabetghadam (author), B. Seoane (author), B. Seoane de la Cuesta (author), Beatriz Seoane (author), Beatriz Seoane de la Cuesta (author), J Gascon (author), Jorge Gascon (author), J Gascon Sabate (author), Jorge Gascon Sabate (author), J. Gascon (author), J. Gascon Sabate (author), F. Kapteijn (author), F Kapteijn (author), Freek Kapteijn (author)