Reference
Goran Schmidt (2015): Slovenska pisma rudarskega nadzornika Lukasa Polca Sigismondu (Zigu) Zoisu v letih od 1789 do 1798 Slovenian letters written by mining supervisor Lukas Polc between 1789 and 1798 to Sigismondo (Ziga) Zois – Scopolia, Journal of the Slovenian Museum of Natural History, Ljubljana – 85: 1 - 142.