@article{GFA_1992__2_1_58148,
     author = {H. Hofer and Y. Eliashberg},
     title = {Towards the {Definition} of {Symplectic} {Boundary.}},
     journal = {Geometric and functional analysis},
     pages = {211--220},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1992},
     zbl = {0756.53016},
     url = {http://geodesic.mathdoc.fr/item/GFA_1992__2_1_58148/}
}