@article{ZNSL_2007_342_a2,
     author = {D. Gomez and S. A. Nazarov and M. E. Perez},
     title = {The formal asymptotics of eigenmodes for oscillating elastic spatial body with concentrated masses},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {31--76},
     publisher = {mathdoc},
     volume = {342},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2007_342_a2/}
}