@article{M2AN_1999__33_4_797_0,
     author = {Imai, Hitoshi and Ishimura, Naoyuki and Ushijima, Takeo},
     title = {Motion of spirals by crystalline curvature},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {797--806},
     publisher = {EDP-Sciences},
     volume = {33},
     number = {4},
     year = {1999},
     mrnumber = {1726486},
     zbl = {0944.34041},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1999__33_4_797_0/}
}