RANGUELOV, B. Et Al. Chapter 20: Bulgarian and Turkish Complex Geological and Geophysical Research in Antarctica: Summary and New Results. 2015. In Environment and Ecology at the Beginning of 21st Century , ST. KLIMENT OHRIDSKI UNIVERSITY PRESS SOFIA, Sofya, 277-301.

RANGUELOV, B., POLAT, O. D., GÖK, E., & ÖZER, Ç., (2015). Chapter 20: Bulgarian and Turkish Complex Geological and Geophysical Research in Antarctica: Summary and New Results. Environment and Ecology at the Beginning of 21st Century (pp.277-301), Sofya: ST. KLIMENT OHRIDSKI UNIVERSITY PRESS SOFIA.

RANGUELOV, Boyko Et Al. "Chapter 20: Bulgarian and Turkish Complex Geological and Geophysical Research in Antarctica: Summary and New Results." In Environment and Ecology at the Beginning of 21st Century , 277-301. Sofya: ST. KLIMENT OHRIDSKI UNIVERSITY PRESS SOFIA, 2015

RANGUELOV, Boyko Et Al. "Chapter 20: Bulgarian and Turkish Complex Geological and Geophysical Research in Antarctica: Summary and New Results." Environment and Ecology at the Beginning of 21st Century , ST. KLIMENT OHRIDSKI UNIVERSITY PRESS SOFIA, 2015, pp.277-301.

RANGUELOV, B. Et Al. (2015) "Chapter 20: Bulgarian and Turkish Complex Geological and Geophysical Research in Antarctica: Summary and New Results", Environment and Ecology at the Beginning of 21st Century . Sofya: ST. KLIMENT OHRIDSKI UNIVERSITY PRESS SOFIA.

@bookchapter{bookchapter, author ={Boyko RANGUELOV Et Al. }, chaptertitle={Chapter 20: Bulgarian and Turkish Complex Geological and Geophysical Research in Antarctica: Summary and New Results}, booktitle={ Environment and Ecology at the Beginning of 21st Century}, publisher={ST. KLIMENT OHRIDSKI UNIVERSITY PRESS SOFIA}, city={Sofya},year={2015} }