@article{RLIN_1991_9_2_2_a1,
     author = {Mori, Andrea},
     title = {A condition for the rationality of certain elliptic modular forms over primes dividing the level},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {103--109},
     publisher = {mathdoc},
     volume = {Ser. 9, 2},
     number = {2},
     year = {1991},
     zbl = {0744.11020},
     mrnumber = {337993},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1991_9_2_2_a1/}
}