1. Nový synonymický slovník slovenský Creator: Filipec, Josef Format: print Type: model:internalpart and TEXT Language: Czech Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
2. Wolfgang Müller: Das Gegenwort-Wörterbuch: ein Kontrastwörterbuch mit Gebrauchshinweisen Creator: Filipec, Josef Format: print Type: model:internalpart and TEXT Language: English Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public
3. Wörterbuch Synonyme Creator: Filipec, Josef Format: print Type: model:internalpart and TEXT Language: English Rights: http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public