1. Avramova-Tacheva E, Kostak B, Dobrev N (1998) Present dynamics of a landslide process in the Black Sea coast region north of Varna (Bulgaria). Acta Montana, IRSM AS CR, Prague. Series A, 12(107):5–15
2. Brankov G (eds) (1983) Vrancea Earthquake in 1977. Its after-effects in Bulgaria. Publ. House of the Bulgarian Academy of Sciences, Sofia, 427p. (in Bulgarian)
3. Dobrev N, Avramova-Tacheva E (1997) Analysis and prognostication of monitored rock deformations. In: Proceedings of IAEG conference, Athens 1997. Balkema, Rotterdam, pp 613–618
4. Evstatiev D, Evlogiev Y (2007) On the origin of the “Ikantalaka” landslide – the Balchik coast. Geologica Balcanica 36(3–4):25–30
5. Evstatiev D, Rizzo V (1984) Sull, origine ed evoluzione delle frane nella zonna di Balchik, sul mar nero (Bulgaria). Geologia applicata e idrogeologia. Bari XIX: 289–305