@article{ZNSL_2007_348_a7,
     author = {V. A. Solonnikov and E. V. Frolova},
     title = {On the justification of the quasistationary approximation 
},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {209--253},
     publisher = {mathdoc},
     volume = {348},
     year = {2007},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2007_348_a7/}
}