@article{AFM_2020_45_2_a13,
     author = {Chiara Guidi and Vittorio Martino},
     title = {Horizontal curvatures and classification results},
     journal = {Annales Fennici Mathematici},
     pages = {829{\textendash}840--829{\textendash}840},
     publisher = {mathdoc},
     volume = {45},
     number = {2},
     year = {2020},
     doi = {10.5186/aasfm.2020.4541},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.2020.4541/}
}