@article{10_4064_aa130_4_1,
     author = {Brad A. Emmons and Dominic Lanphier},
     title = {Products of an arbitrary number of {Hecke} eigenforms},
     journal = {Acta Arithmetica},
     pages = {311--319},
     publisher = {mathdoc},
     volume = {130},
     number = {4},
     year = {2007},
     doi = {10.4064/aa130-4-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa130-4-1/}
}