@article{10_4064_aa156_2_4,
     author = {Rajender Adibhatla and Jayanta Manoharmayum},
     title = {Higher congruence companion forms},
     journal = {Acta Arithmetica},
     pages = {159--175},
     publisher = {mathdoc},
     volume = {156},
     number = {2},
     year = {2012},
     doi = {10.4064/aa156-2-4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa156-2-4/}
}