The concept of the activating state and its view of humanity
in: Zeitschrift für Transaktionsanalyse, ZTA 2/2013, p. 125 - 147, Paderborn 2013 (Also published in the Congress Reader of the 34th Congress of the DGTA in Freiburg from 10-12 May 2013).
in: Zeitschrift für Transaktionsanalyse, ZTA 2/2013, p. 125 - 147, Paderborn 2013 (Also published in the Congress Reader of the 34th Congress of the DGTA in Freiburg from 10-12 May 2013).