@article{AFM_2006_31_1_a13,
     author = {A. Sankaranarayanan},
     title = {On {Hecke} {L-functions} associated with cusp forms {II:} {On} the sign changes of {Sf(T)}},
     journal = {Annales Fennici Mathematici},
     pages = {213--238},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2006_31_1_a13/}
}