@article{AIHPC_2012__29_5_761_0,
     author = {Kowalczyk, Micha{\l} and Liu, Yong and Pacard, Frank},
     title = {The space of 4-ended solutions to the {Allen{\textendash}Cahn} equation in the plane},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {761--781},
     publisher = {Elsevier},
     volume = {29},
     number = {5},
     year = {2012},
     doi = {10.1016/j.anihpc.2012.04.003},
     mrnumber = {2971030},
     zbl = {1254.35219},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/j.anihpc.2012.04.003/}
}