1. The Madara Rider, Bulgaria: a plea for co-operation;Camuffo,1994
2. The Madara Horseman, Monuments and Sites in Bulgaria;Todorov,1996
3. Stratigraphy of the Epicontinental Type Upper Cretaceous in Bulgaria;Yolkichev,1989
4. Stability problems of the rock monument ‘Madara Horseman';Frangov,1992
5. Litolojki i strukturni izsledvaniya na Madarskiya konnik;Hadjiev;Sb. Dokladi,1976