Angelopoulos A, Fildisis T (eds.): 7th International Conference of the Balkan Physical Union. AIP Conference Proceedings, volume 1203; AIP Publishing, Melville, NY; pp. 1104-1107; ISBN 978-0-7354-0740-4
2010,
Gapeyev AB, Sirota NP, Kudryavtsev AA, Chemeris NK