@article{ZNSL_2004_308_a9,
     author = {S. A. Nazarov},
     title = {Estimates for second order derivatives of eigenvectors in thin anisotropic plates with variable thickness},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {161--181},
     publisher = {mathdoc},
     volume = {308},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2004_308_a9/}
}