Spassov, N., Geraads, D., Hristova, L., Markov, G. N., 2019. The Late Miocene (Turolian) mammal fauna from Gorna Sushitsa, Southwestern Bulgaria. — Neues Jahrbuch für Geologie und Paläontologie, 291 (3): 317—350.
Spassov, N., Iliev, N., Hristova, L., Ivanov, V., 2018. Typology of Thracian horses according to osteological analysis of skeletal remains and depictions from the antiquity. — Historia naturalis bulgarica, 25: 15—24. [PDF] doi:10.5281/zenodo.4043992
Spassov, N., Hristova, L., Iliev, N., 2018. The domesticated horses from the submerged prehistoric village of Urdoviza (Kiten) on the Bulgarian Black Sea coast — among the oldest known. — Historia naturalis bulgarica, 25: 11—14. [PDF] doi:10.5281/zenodo.4043978
Spassov, N., Hristova, L., 2018. Early Ursus etruscus Cuvier from the Middle Villafranchian carst cavern locality of Varshets (Bulgaria). — 24th International Cave Bear Symposium 2018, Chepelare, 27—30.09.2018.
Spassov, N., Geraads, D., Hristova, L., Markov, G. N., Garevska, B., Garevski, R., 2018. The late Miocene mammal faunas of the Republic of Macedonia (FYROM). — Palaeontographica A., 311 (1—6): 1—85.
Nikolov, V., Pavlishina, P., Yaneva, M., Dochev, D., Konyovska, R., Hristova, L., 2018. Late Cretaceous dinosaur remains and other tetrapod fauna from the vicinity of Tran town (Western Srednogorie). — National Conference with international participation ‘GEOSCIENCES 2018’. Review of Bulgarian Geological Society, 79 (3): 99—100.
Gurova, M., Ivanova, S., Marinova, E., V., Spassov, N., Hristova, L., Verheyden, S., Burlet, C., 2018. Excavations at Mishin Kamik Cave: fifth season. — Archaeological Discoveries and Excavations in 2017, National Archaeological Institute with Museum at the Bulgarian Academy of Sciences,8—11.
Dzhebir, G., Yordanov, G., Yankova, I., Sirakova, D., Petrova, M., Neov, B., Hristov, P., Radoslavov, G., Hristova, L., Spassov, N., 2018. Comparative genetic analysis of subfossil wild horses (from the Neolithic Age and Early Bronze Age) and present-day domestic horses from Bulgaria. — Historia naturalis bulgarica, 25: 3—10. [PDF] doi:10.5281/zenodo.4043974
Dzhebir, G., Yordanov, G., Yankova, I., Sirakova, D., Petrova, M., Neov, B., Hristov, P., Radoslavov, G., Hristova, L., Spassov, N., 2018. Comparative genetic analysis of modern and ancient horses from the Neolithic age in Bulgaria. — Historia naturalis bugarica, 28: 3—10.
Spassov, N., Hristova, L., Ivanova, S., Georgiev, I., 2017. First Record of the ‘Small Cave Bear’ in Bulgaria and taxonomic status of the bears of the Ursus savini Andrews — Ursus rossicus Borissiak group. — Fossil Imprint, 73 (3—4): 275—291.