@article{M2AN_1994__28_4_419_0,
     author = {Dobson, D. C.},
     title = {A variational method for electromagnetic diffraction in biperiodic structures},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {419--439},
     publisher = {AFCET - Gauthier-Villars},
     address = {Paris},
     volume = {28},
     number = {4},
     year = {1994},
     mrnumber = {1288506},
     zbl = {0820.65087},
     language = {en},
     url = {http://www.numdam.org/item/M2AN_1994__28_4_419_0/}
}