- Publication venue
- 'Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences)'
- Publication date
- Field of study
- Publication venue
- 'Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences)'
- Publication date
- Field of study
- Publication venue
- 'Prof. Marin Drinov Publishing House of BAS (Bulgarian Academy of Sciences)'
- Publication date
- Field of study