1. " Dám si Birell" Creator: Bechtin, Alexej Type: article, model:article, and TEXT Language: Czech Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
2. Spilka není stáčírna: (Ad Vesmír 84, 188, 4/2005) Creator: Bechtin, Alexej Type: article, model:article, and TEXT Language: Czech Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public