@article{SLC_2009-2011_61A_a7,
     author = {Nicolas Bonichon and Mireille Bousquet-M\'elou and \'Eric Fusy},
     title = {Baxter {Permutations} and {Plane} {Bipolar} {Orientations}},
     journal = {S\'eminaire lotharingien de combinatoire},
     publisher = {mathdoc},
     volume = {61A},
     year = {2009-2011},
     url = {http://geodesic.mathdoc.fr/item/SLC_2009-2011_61A_a7/}
}