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Markov G. N., Spassov N., Simeonovski V. 2001. A reconstruction of the facial morphology and feeding behaviour of the deinotheres. In: Cavaretta G., P. Gioia, M. Mussi, M.R. Palombo (Eds), The World of Elephants. Proceedings of the 1st International Congress. Consiglio Nazionale delle Ricerche — Roma, 652—655 [PDF].
Markov G. N., Spassov N. 2003. Primitive mammoths from Northeast Bulgaria in the context of the earliest migrations in Europe. In: Petculescu A., Stiuca E. (Eds), Advances in Vertebrate Paleontology ‘Hen to Panta’, Bucharest, 53—58.
Markov G. N., Saegusa H. 2008. On the validity of Stegoloxodon Kretzoi, 1950 (Mammalia: Proboscidea). — Zootaxa, 1861: 55—56.
Markov G. N. 2008. Fossil proboscideans (Mammalia) from the vicinities of Varna: a rare indication of middle Miocene vertebrate fauna in Bulgaria. — Historia naturalis bulgarica, 19: 137—152 [PDF].
Markov G. N. 2008. The Turolian proboscideans (Mammalia) of Europe: preliminary observations. — Historia naturalis bulgarica, 19: 153—178 [PDF].
Gasparik M., Markov G. N. 2009. Gomphotherium ‘annectens group’ (Proboscidea) in Hungary. — Fragmenta Palaeontologica Hungarica, 27: 73—79.
Markov G. N., Vergiev S. 2010. First report of cf. Protanancus (Mammalia, Proboscidea, Amebelodontidae) from Europe. — Geodiversitas, 32 (3): 493—500 [PDF].
Vergiev S., Markov G. N. 2010. A mandible of Deinotherium (Mammalia: Proboscidea) from Aksakovo near Varna, Northeast Bulgaria. — Palaeodiversity, 3: 241—247 [PDF].
Garevski R., Markov G. N. 2011. A Deinotherium gigantissimum (Mammalia, Proboscidea) palate with deciduous dentition from the area of Veles, Republic of Macedonia. — Paläontologische Zeitschrift, 85: 33—36.