@incollection{JEDP_2005____A15_0,
     author = {Delort, Jean-Marc and Szeftel, J\'er\'emie},
     title = {Almost global solutions for non hamiltonian semi-linear {Klein-Gordon} equations on compact revolution hypersurfaces},
     booktitle = {},
     series = {Journ\'ees \'equations aux d\'eriv\'ees partielles},
     eid = {15},
     pages = {1--13},
     publisher = {Groupement de recherche 2434 du CNRS},
     year = {2005},
     doi = {10.5802/jedp.26},
     mrnumber = {2352782},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jedp.26/}
}