Articles have to be submitted to North Korean journals and every one has to include a quote from one of the Kims introduced by one of the following formulae: “The Great Leader respected comrade Kim Il-sung taught the following…”, “The Great Guide respected comrade Kim Jong-il instructed the following…” or “The Beloved and respected comrade Kim Jong-un said the following…”This rule is followed in every article, including science subjects and mathematics. First a quote from a Kim and only then may you begin your research.