@article{IVM_1997_3_a4,
     author = {S. I. Mitrokhin},
     title = {On the ``splitting'' in the main approximation of multiple eigenvalues of multipoint boundary value problems},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {38--43},
     publisher = {mathdoc},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1997_3_a4/}
}