The article (in Korean) at „Aris Online Korea“. 2002-yil 28-sentyabrda asl nusxadan arxivlangan. Qaraldi: 2005-yil 19-iyul. quotes Lee Hee-Soo (Yi Hui-su), president of 한국 이슬람 학회 (Korea Islam Institute), with these figures.
Yunli Shi (January 2003). "The Korean Adaptation of the Chinese-Islamic Astronomical Tables". Archive for History of Exact Sciences (Springer) 57 (1): 25–60 [30]. doi:10.1007/s00407-002-0060-z. ISSN1432-0657.
The article (in Korean) at „Aris Online Korea“. 2002-yil 28-sentyabrda asl nusxadan arxivlangan. Qaraldi: 2005-yil 19-iyul. quotes Lee Hee-Soo (Yi Hui-su), president of 한국 이슬람 학회 (Korea Islam Institute), with these figures.
„Archived copy“. 2008-yil 29-aprelda asl nusxadan arxivlangan. Qaraldi: 2008-yil 19-dekabr. Life is Very Hard for Korean Muslims
Yunli Shi (January 2003). "The Korean Adaptation of the Chinese-Islamic Astronomical Tables". Archive for History of Exact Sciences (Springer) 57 (1): 25–60 [30]. doi:10.1007/s00407-002-0060-z. ISSN1432-0657.