Pankowski , Valentin. 2017. “TRACEOLOGICAL EVIDENCE FROM THE LATE TRIPOLYE DAGGER-LIKE BONE OBJECTS”. Arkheologiia Evraziiskikh Stepei (Archaeology of the Eurasian Steppes), no. 2 (December):253-64. https://evrazstep.ru/index.php/aes/article/view/149.