@article{10_4064_ap113_2_4,
     author = {Ronaldo Garcia and R\'emi Langevin and Pawe{\l} Walczak},
     title = {Foliations making a constant angle
 with principal directions on ellipsoids},
     journal = {Annales Polonici Mathematici},
     pages = {165--173},
     publisher = {mathdoc},
     volume = {113},
     number = {2},
     year = {2015},
     doi = {10.4064/ap113-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap113-2-4/}
}