io/en/feature/2022/03/16/a-new-symbol-of-russia-s-anti-war-movement 2022年3月17日閲覧。 ^ a b “Weiss-blau-weisse Flagge – das neue Symbol von Russlands Anti-Kriegs-Bewegung:
2.1.1.1 Unit of length(metre), p.112欄外注 The symbol, c0 (or sometimes simply c), is the conventional symbol for the speed of light in vacuum. ^ https://www