Thuy, Ung Thi Dieu
Borisova, Irena
Stoilova, Olya
Rashkov, Iliya
Liem, Nguyen Quang
Funding for this research was provided by:
Vietnam Academy of Science and Technology and Bulgarian Academy of Sciences (VAST.HTQT. BULGARIA.01/17-18)
Article History
Received: 10 April 2018
Accepted: 4 July 2018
First Online: 9 July 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.