@article{IVM_1980_10_a8,
     author = {Ya. L. Shapiro and N. I. Zhukova},
     title = {Global structure of reducible {Riemannian} manifolds},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {60--62},
     year = {1980},
     number = {10},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1980_10_a8/}
}