@article{10_4064_ap86_1_6,
     author = {Vladimir Rovenski},
     title = {Conformal nullity of isotropic submanifolds},
     journal = {Annales Polonici Mathematici},
     pages = {47--57},
     publisher = {mathdoc},
     volume = {86},
     number = {1},
     year = {2005},
     doi = {10.4064/ap86-1-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap86-1-6/}
}