@article{ASCFM_1974__51_9_51_0,
     author = {Letac, G\'erard},
     title = {Barycentres de matrices idempotentes stochastiques},
     journal = {Annales scientifiques de l'Universit\'e de Clermont. Math\'ematiques},
     pages = {51--61},
     publisher = {UER de Sciences exactes et naturelles de l'Universit\'e de Clermont},
     volume = {51},
     number = {9},
     year = {1974},
     mrnumber = {362497},
     zbl = {0292.60098},
     language = {fr},
     url = {http://www.numdam.org/item/ASCFM_1974__51_9_51_0/}
}