@article{MZM_1985_38_4_a14,
     author = {A. A. Grigor'yan},
     title = {Isoperimetric inequalities for {Riemannian} products},
     journal = {Matemati\v{c}eskie zametki},
     pages = {617--626},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1985_38_4_a14/}
}