Sergiev, Iskren
Todorova, Dessislava
Katerova, Zornitsa
Brambilla, Ida
Mapelli, Sergio
Simova, Svetlana
Funding for this research was provided by:
Bulgarian National Science Fund (DMU 03/60)
Article History
Received: 26 January 2018
Accepted: 12 May 2018
First Online: 17 May 2018