@article{RM_1970_25_4_a4,
     author = {S. I. Alber},
     title = {The topology of functional manifolds and the calculus of variations in the large},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {51--117},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {1970},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1970_25_4_a4/}
}