@article{IM2_2006_70_4_a3,
     author = {V. A. Klyachin},
     title = {On some properties of stable and unstable surfaces with prescribed mean curvature},
     journal = {Izvestiya. Mathematics},
     pages = {717--730},
     year = {2006},
     volume = {70},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2006_70_4_a3/}
}