Sources:

1/1993 Sb. Constitution

2/1993 Sb. Charter of basic human rights and freedoms

Jan Grinc, Constitutional Stability and Dynamics in the Czech Republic, 5 ICJ 16 (2019). Accessible at https://is.muni.cz/auth/el/law/jaro2020/SOC015/um/articles_chapters_etc/Grinc_constitution.pdf 

PRAKKE, Lucas, Constantijn KORTMANN a Hans van den BRANDHOF. Constitutional law of 15 EU member states / editors Lucas Prakke, Constantijn Kortmann ; by Hans van den Brandhof ... [et al.]. 2004. ISBN 9013012558.