@article{GDZPPN002220725, title = {A Periodic Flow with Infinite Epstein Hierarchy.}, journal = {Manuscripta mathematica}, volume = {22}, year = {1977}, pages = {403-412}, zbl = {0364.57006}, url = {http://dml.mathdoc.fr/item/GDZPPN002220725} }
Vogt, Elmar. A Periodic Flow with Infinite Epstein Hierarchy.. Manuscripta mathematica, Tome 22 (1977) pp. 403-412. http://gdmltest.u-ga.fr/item/GDZPPN002220725/