"Cyrillic: Range: 0400–04FF". pp 38–43 of The Unicode Standard, Version 6.0 (2010). p. 43. http://unicode.org/charts/PDF/U0400.pdf Accessed 2011-04-23. http://unicode.org/charts/PDF/U0400.pdf ↩
"Nivkh (Нивхгу/Nivxgu)". Wolfram Siegel. in Omniglot: Writing systems & languages of the world. Simon Ager (ed.). http://www.omniglot.com/writing/nivkh.htm Accessed 2011-04-23. http://www.omniglot.com/writing/nivkh.htm ↩