@article{TSG_1992-1993__11__85_0,
     author = {Gurarie, David},
     title = {Closed geodesics and flat tori in spectral theory on symmetric spaces},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {85--103},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {11},
     year = {1992-1993},
     mrnumber = {1715945},
     zbl = {0909.58056},
     language = {en},
     url = {http://www.numdam.org/item/TSG_1992-1993__11__85_0/}
}