@article{AMBP_1994__1_1_27_0,
     author = {Kobotis, A. and Xenos, Ph.J.},
     title = {On $G_2$-manifolds},
     journal = {Annales math\'ematiques Blaise Pascal},
     pages = {27--42},
     publisher = {Laboratoires de Math\'ematiques Pures et Appliqu\'ees de l'Universit\'e Blaise Pascal},
     volume = {1},
     number = {1},
     year = {1994},
     mrnumber = {1275215},
     zbl = {0804.53047},
     language = {en},
     url = {http://www.numdam.org/item/AMBP_1994__1_1_27_0/}
}