@article{ZNSL_2000_267_a4,
     author = {J.-Y. Welschinger},
     title = {Real $J$-curves with deep nests on ruled surfaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {88--118},
     publisher = {mathdoc},
     volume = {267},
     year = {2000},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2000_267_a4/}
}