41. Publications of the Astronomical Institute of the Academy of Sciences of the Czech Republic Type: model:periodicalitem and TEXT Language: Czech and English Description: 30 and On the origin and early stages of the meteor streams Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
42. Umění. Obsah ročníku Type: model:supplement and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public