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Further Readings
Cristian Kit Paul: Romanian diacritic marks | HOW DID WE END UP LOOKING HALF-ILLITERATE?
TypeDrawers: Tcomma and Tcedilla
Diacritics: Comma Accent (bellow the character)
Glyphs: Localize Your Font: Romanian and Moldovan Comma Accent
Remarks
Stefan Peev is a graphic designer and typographer from Bulgaria.