@article{10_2298_PIM0578135R,
     author = {Rosenfeld, Boris},
     title = {Holomorphy angles and sectional curvature in {Hermitian} elliptic planes over fields and tensor products of fields.},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {135},
     publisher = {mathdoc},
     volume = {78(92)},
     year = {2005},
     doi = {10.2298/PIM0578135R},
     zbl = {1119.32010},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.2298/PIM0578135R/}
}