@article{CMH_1994__69_4_140339,
     author = {M. Dajczer and J.L. Barbosa and R. Tojeiro},
     title = {Isometric immersions of {Riemannian} products revisited.},
     journal = {Commentarii mathematici Helvetici},
     pages = {281--290},
     year = {1994},
     volume = {69},
     number = {4},
     zbl = {0861.53057},
     url = {http://geodesic.mathdoc.fr/item/CMH_1994__69_4_140339/}
}