@article{ETNA_2012__39__a7,
     author = {Liu, Zhiyong and He, Yinnian},
     title = {Cascadic multigrid preconditioner for elliptic equations with jump coefficients},
     journal = {Electronic transactions on numerical analysis},
     pages = {333--339},
     publisher = {mathdoc},
     volume = {39},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2012__39__a7/}
}