1. Istudor, I. Technical details of Voronet paintings Art Conservation support. [Publication Date] 08 12 2010. [Quote: 18 03 2018.] http://acs.org.ro/ro/conservare/255-detalii-tehnice-ale-picturii-de-la-voronet.
2. Anonimous. The secrets of “Voronet blue” and “ white Humor”. Gândul – newspaper. [Publication Date] 18 09 2008. [Quote: 18 03 2018.] http://www.gandul.info/reportaj/secretele-albastrului-de-voronet-si-albului-de-humor-3197351.
3. Anonimous. The secrets of Voronet Monastery. 10 unknown things about the Sixteen Chapel of East and how the wonderful Voronet blue has appeared. Romanian identity. [Publication Date] [Quote: 18 03 2018.] http://identitatea.ro/tainele-manastirii-voronet-zece-lucruri-mai-putin-stiute-despre-capela-sixtina-a-estului/.
4. Anonimous Humor Monastery. Romania's mountains. [Publication Date] [Quote: 18 03 2018.] http://romania-montana.ro/en/proprietate/judet/suceava/manastirea-humorului/.
5. Role of Additives in Mortars: Historic Precedents;Acharya;Int. Journal of Engineering Research and Application,2017