@article{IM2_2003_67_6_a1,
     author = {D. I. Borisov},
     title = {Asymptotics and estimates for the eigenelements of the {Laplacian} with frequently alternating non-periodic boundary conditions},
     journal = {Izvestiya. Mathematics },
     pages = {1101--1148},
     publisher = {mathdoc},
     volume = {67},
     number = {6},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2003_67_6_a1/}
}