@article{M2AN_2006__40_4_765_0,
     author = {Antontsev, Stanislav N. and Gagneux, G\'erard and Luce, Robert and Vallet, Guy},
     title = {New unilateral problems in stratigraphy},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {765--784},
     publisher = {EDP-Sciences},
     volume = {40},
     number = {4},
     year = {2006},
     doi = {10.1051/m2an:2006029},
     mrnumber = {2274777},
     zbl = {1133.35388},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/m2an:2006029/}
}