"Population by religious belief and sex by 1921, 1930, 1950, 1991, 2001 and 2011 censuses 1)" (in Czech and English).
اطلع عليه بتاريخ 23 أبريل 2012.  "Population by religious belief and sex by 1921, 1930, 1950, 1991, 2001 and 2011 censuses 1)" (باللغة التشيكية and الإنجليزية).