@article{10_4064_ap97_2_5,
     author = {Fathi Haggui and Adel Khalfallah},
     title = {Some characterizations of
 hyperbolic almost complex manifolds},
     journal = {Annales Polonici Mathematici},
     pages = {159--168},
     publisher = {mathdoc},
     volume = {97},
     number = {2},
     year = {2010},
     doi = {10.4064/ap97-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap97-2-5/}
}