Assessing the significance of Palaeolithic engraved cortexes. A case study from the Mousterian site of Kiik-Koba, Crimea Majkić, Ana ; d'Errico, Francesco ; Stepanchuk, Vadim Abstract Publication: PLoS ONE Pub Date: May 2018 DOI: 10.1371/journal.pone.0195049 Bibcode: 2018PLoSO..1395049M