@article{MOMA_1973__77_177658,
     author = {L.V. Toralballa},
     title = {A {Geometric} {Theory} of {Surface} {Area.} {III.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {363--365},
     publisher = {mathdoc},
     volume = {77},
     year = {1973},
     zbl = {0276.50003},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1973__77_177658/}
}