Second VarSITI General Symposium (VarSITI-2017) was held with the financial support of the Russian Foundation for Basic Research, Project No. 17-05-20306.
Georgieva, Katya, <p>Space Research and Technology Institute B</p><p>Bulgarian Academy of Sciences</p><p>Bl. 3 Acad. G. Bonchev str.</p><p>1113 Sofia</p>, Bulgaria
