Национален археологически музей Каталози / National archaeological museum Catalogues

Vassil Nikolov. The Lords of Salt: Provadia-Solnitsata 5600-4350 BC. (=National Archaeological Museum, Catalogues, Vol. XXXIX). Sofia: Prof. Marin Drinov Publishing House - BAS. 200 p., ISSN 2367-8860, ISBN 978-619-254-045-6.