@article{GDZPPN000461504, title = {Towards the Definition of Symplectic Boundary.}, journal = {Geometric and functional analysis}, volume = {2}, year = {1992}, pages = {211-220}, zbl = {0756.53016}, url = {http://dml.mathdoc.fr/item/GDZPPN000461504} }
Hofer, H.; Eliashberg, Y. Towards the Definition of Symplectic Boundary.. Geometric and functional analysis, Tome 2 (1992) pp. 211-220. http://gdmltest.u-ga.fr/item/GDZPPN000461504/