Cieślak, Piotr, Andrzej Wróbel, and Monika Zawadzka. "Manufacturing of a Cast Block Candle - Gelpressing Method." WIPO Patent number 2011149369. Geneva: WIPO Patent Office, 2011.

Cieślak, Piotr, Andrzej Wróbel, and Monika Zawadzka. "Manufacturing of a Cast Block Candle - Gelpressing Method." WIPO Patent number 2011149369. Geneva: WIPO Patent Office, 2011.