@article{MM2_1996__90_2_156203,
     author = {Ra\'ul M. Aguilar},
     title = {Isotropic almost complex structures on tangent bundles.},
     journal = {Manuscripta mathematica},
     pages = {429--436},
     publisher = {mathdoc},
     volume = {90},
     number = {2},
     year = {1996},
     zbl = {0881.53020},
     url = {http://geodesic.mathdoc.fr/item/MM2_1996__90_2_156203/}
}