Angelova, D., Beloul, M.A., Bouzid, S. and Faik, F. 2016. Karst and Cave Systems in Bosnek Region (Vitosha Mountain, Bulgaria) and Wintimdouine (High Atlas Mountain, Morocco). Acta Carsologica. 34, 1 (May 2016). DOI:https://doi.org/10.3986/ac.v34i1.281.