Lexikon des Familienstellens und der systemischen Aufstellungsarbeit (Lexika of family constellations and of systemic constellations coaching) Schirner Publishing, 2nd edition "The first reference book on systemic constellations" Systemic constellations are a family therapy and coaching approach developed and broadly used in Germany. I use it regularly with a lot of success for my coaching interventions. My book became rapidly a “must-have” on the subject.