1. Kosmowska-Ceranowicz B. Bursztyn w Polsce i na świecie/Amber in Poland and in the World. 2nd Ed., revised. Warsaw: WUW; 2017.
2. Anderson KB. New evidence concerning the structure, composition and maturation of Class I (polylabdanoid) resinites. In: Anderson KB, Crelling J, editors. Amber, Resinite and Fossil Resins. ACS Symposium Series 617. Washington, DC: American Chemical Society; 1996. pp. 105–129.
3. Vávra N. The chemistry of amber—facts, findings and opinions. Ann Naturhist Mus Wien. 2009;111A:445–74.
4. Stach P, Martinkutė G, Natkaniec-Nowak L, Drzewicz P, Naglik B, Šinkūnas P, Bogdasarov M. Fossil resins of different age and worldwide geographical locations—new data on their physical properties. Baltica. 2019; (in print).
5. Jablonski P, Golloch A, Borchard W. DSC-measurements of amber and resin samples. Thermochim Acta. 1999;333:87–93.