@article{JEMS_2017_19_11_a7,
     author = {Abhishek Saha},
     title = {On sup-norms of cusp forms of powerful level},
     journal = {Journal of the European Mathematical Society},
     pages = {3549--3573},
     publisher = {mathdoc},
     volume = {19},
     number = {11},
     year = {2017},
     doi = {10.4171/jems/746},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/746/}
}