@unpublished{HabeckPfetsch2020, author = {Habeck, Oliver and Pfetsch, Marc E.}, title = {Combinatorial Acyclicity Models for Potential-based Flows}, url = {https://opus4.kobv.de/opus4-trr154/311}, year = {2020}, language = {en}, type = {Preprint}, institution = {TRR 154} }