@article{IVM_2005_4_a1,
     author = {V. N. Bobochko},
     title = {An unstable differential turning point in the theory of singular perturbations},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {8--17},
     publisher = {mathdoc},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2005_4_a1/}
}