1 이지완, "시각장애인을 위한 라즈베리 파이 기반 지폐 인식기 개발" 한국전자거래학회 23 (23): 21-31, 2018
2 Deulpul Kim, "Most simple payment apps are very inconvenient for people with disabilities to use"
3 Su-Jin Chang, "Money identification device for the blind" The Korean Institute of Electrical Engineers 111-112, 2018
4 Sunyoung Pak, "Height and living standards in North Korea, 1930s-1980s" 64 : 142-158,
5 Cheol-Gin Park, "Currency Identification Wearable for A visually handicapped person" 473-474, 2017
6 Byeolee Kim, "Braille credit cards that blind people can’t read?"
7 Byeolee Kim, "Bank of Korea plans to issue Braille cards for the blind"
8 Sung-Wook Lee, "Automatic bill classification wallet for the blind" The Korean Institute of Electrical Engineers 177-180, 2019
9 Chanhum Park, "A Survey on Banknote Detection by Deep Learning" The Institute of Electronics and Information Engineers 356-358, 2018