Oatmeal paper is a paper made from oatmeal. In Korea, Oatmeal paper is called as Hwangji (황지, 黃紙, Yellow paper). Jaegaseung (Jurchen people descendants who live in Korea) produced this paper and substitute their tax to oatmeal paper.
- Dong-A ilbo, January 1, 1936, 56th page
- Hwang Chol-san (1960). Hamgyŏng pukto pukpu san'gan purak (chaegasŭng purak) ŭi munhwa wa p'ungsŭp [Culture and customs of the mountain villages (lay monk villages) in far northern Hamgyong province]. OCLC 23977624.
- Kim Hwansoo (2013). "'The Mystery of the Century:' Lay Buddhist Monk Villages (Chaegasŭngch'on) Near Korea's Northernmost Border, 1600s–1960" (PDF). Seoul Journal of Korean Studies. 26 (2). Retrieved 24 April 2016.