Journal of the Korean School Mathematics Society (한국학교수학회논문집) 1229-0890(pISSN) / 2713-4350(eISSN) / 1998.11.28 ~ https://ksms.jams.or.kr/co/com/EgovMenu.kci?s_url=/sj/search/sjSereClasList.kci&s_MenuId=MENU-000000000053000&accnId=AC0000000004 KSCI