@article{MAN_1987__279_3_164314,
     author = {Dana Nance},
     title = {Sufficient {Conditions} for a {Pair} of {n-Planes} to be {Area-Minimizing.}},
     journal = {Mathematische Annalen},
     pages = {161--164},
     publisher = {mathdoc},
     volume = {279},
     number = {3},
     year = {1987},
     zbl = {0663.49020},
     url = {http://geodesic.mathdoc.fr/item/MAN_1987__279_3_164314/}
}