@incollection{Rings2018, author = {Rings, J{\o}rn}, title = {3-2-1 Methode}, series = {Das große Handbuch Innovation}, booktitle = {Das große Handbuch Innovation}, publisher = {Verlag Franz Vahlen}, address = {M{\"u}nchen}, isbn = {978-3-8006-5683-7}, pages = {69}, year = {2018}, language = {de} }