@article{ETNA_2008__30__a9,
     author = {Lisitsa,  Vadim},
     title = {Optimal discretization of {PML} for elasticity problems},
     journal = {Electronic transactions on numerical analysis},
     pages = {258--277},
     year = {2008},
     volume = {30},
     zbl = {1170.74052},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ETNA_2008__30__a9/}
}