@article{SLC_1987_18_a11,
     author = {Germain Kreweras},
     title = {Une bijection explicative de plusieurs propri\'et\'es des ponts},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1987},
     volume = {18},
     url = {http://geodesic.mathdoc.fr/item/SLC_1987_18_a11/}
}