Links
[1] https://civilresistance.info/biblio-item/1991/czechoslovakias-nonviolent-revolution
[2] https://civilresistance.info/biblio-item/1991/nonviolent-struggle-and-social-defence
[3] https://civilresistance.info/section/introduction-nonviolent-action/1-theory-methods-and-examples/1b-strategic-theory-dynamics
[4] https://civilresistance.info/biblio-item/1982/voices-prague-documents-czechoslovakia-and-peace-movement