Lilkova, Elena https://orcid.org/0000-0003-2008-710X
Petkov, Peicho
Ilieva, Nevena
Krachmarova, Elena
Nacheva, Genoveva
Litov, Leandar
Funding for this research was provided by:
Programme for Young Scientists’ Career Development at the Bulgarian Academy of Sciences (DFNP-17-146/2017)
Bulgarian National Science Fund (DN-11/20/2017)
Bulgarian National Science Fund (DNTS-Austia-01-2/2013)
Article History
Received: 3 December 2018
Accepted: 29 March 2019
First Online: 25 April 2019