- Blank Seats, Spain(页面存档备份,存于互联网档案馆) Movimiento Ciudadano por el Voto en Blanco Computable - Escaños en Blanco (Citizens' Movement for the Blank Counting
31 December 1954. Washington DC: U.S. Government Printing Office. 1955. Blank, Stephen (1993). The Soviet Conquest of Georgia. Central Asian Survey, 33-46:12