@article{BSMF_2006__134_2_287_0,
     author = {Welschinger, Jean-Yves},
     title = {Invariants of real symplectic four-manifolds out of reducible and cuspidal curves},
     journal = {Bulletin de la Soci\'et\'e Math\'ematique de France},
     pages = {287--325},
     publisher = {Soci\'et\'e math\'ematique de France},
     volume = {134},
     number = {2},
     year = {2006},
     doi = {10.24033/bsmf.2511},
     mrnumber = {2233710},
     zbl = {1118.53058},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/bsmf.2511/}
}