@article{Knittel1999, author = {G. Knittel}, title = {Ebenen der G{\"u}tekraftforschung}, journal = {M. Arnold and G. Knittel (Ed.), G{\"u}tekraft erforschen: Kraft der Gewaltfreiheit, Satyagraha, Strength to love, Minden (Verlag Vers{\"o}hnungsbund) 1999, pp. 97-100.}, year = {1999}, }