@article{SMJ2_2007_33_1_a2,
     author = {Fabricant, Alexander and Kutev, Nikolai and Rangelov, Tsviatko},
     title = {The {Asymptotic} {Behaviour} of the {First} {Eigenvalue} of {Linear} {Second-Order} {Elliptic} {Equations} in {Divergente} {Form}},
     journal = {Serdica Mathematical Journal},
     pages = {47--58},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2007_33_1_a2/}
}