Rusinova-Videva, S., Dimitrova, S., Georgieva, K., Katsarova, M., Pavlova, K. (2016) Effect of Zn2+, Cu2+,and Fe2+ions for Accumulation of Ergosterol, B-carotene and Coenzyme Q10 by Antarctic Yeast Strain Sporobolomyces Salmonicolor AL1, Sofia: 1005-1012,.