1. Mezi hvězdami Creator: Gottlieb, František Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
2. Útěk před zkázou Creator: Gottlieb, František Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
3. Z tohoto i onoho světa Creator: Gottlieb, František Format: electronic Type: model:article and TEXT Language: Czech Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public