@article{SJVM_2000_3_3_a1,
     author = {A. B. Andreev and T. D. Todorov},
     title = {Lumped mass error estimates for an isoparametric finite element eigenvalue problem},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {215--228},
     year = {2000},
     volume = {3},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2000_3_3_a1/}
}