@article{M2AN_2009__43_3_429_0,
     author = {Rahman, Talal and Xu, Xuejun},
     title = {A multilevel preconditioner for the mortar method for nonconforming $P_1$ finite element},
     journal = {ESAIM: Mod\'elisation math\'ematique et analyse num\'erique},
     pages = {429--444},
     publisher = {EDP-Sciences},
     volume = {43},
     number = {3},
     year = {2009},
     doi = {10.1051/m2an/2009003},
     mrnumber = {2527400},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/m2an/2009003/}
}