@article{10_37236_9121, author = {Andrew Krieger and Georg Menz and Martin Tassy}, title = {Deducing a variational principle with minimal \textit{a priori} assumptions}, journal = {The electronic journal of combinatorics}, year = {2020}, volume = {27}, number = {4}, doi = {10.37236/9121}, zbl = {1451.82017}, url = {http://geodesic.mathdoc.fr/articles/10.37236/9121/} }