Osnovni termini po karstova geomorfologija. (Basic terms on karst geomorphology)
The present work should be regarded as the first attempt to classify and characterize some basic terms on karst geomorphology in Bulgaria. The autors inform briefly about the discussions during the international spelaeological congresses for working
Osnovni termini po karstova geomorfologija (kalcitni i ledeni podzemni karstovi formi). (Basic terms in karst geomorphology (calcite and ice-underground karst forms)
This article follows another one, titled Basic terms on karst geomorphology, published in the Problemi na geografijata quarterly, volume 2, 1980, It is an attempt to classify and characterize the basic terms associated with cave calcite and ice