@article{CRMATH_2018__356_1_13_0,
     author = {Yang, Quan-Hui and Zhao, Qing-Qing},
     title = {Powerful numbers in (1\protect\textsuperscript{\protect\emph{\ensuremath{\ell}}}\,+\,\protect\emph{q}\protect\textsuperscript{\protect\emph{\ensuremath{\ell}}})(2\protect\textsuperscript{\protect\emph{\ensuremath{\ell}}}\,+\,\protect\emph{q}\protect\textsuperscript{\protect\emph{\ensuremath{\ell}}})\ensuremath{\cdots}(\protect\emph{n}\protect\textsuperscript{\protect\emph{\ensuremath{\ell}}}\,+\,\protect\emph{q}\protect\textsuperscript{\protect\emph{\ensuremath{\ell}}})},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {13--16},
     publisher = {Elsevier},
     volume = {356},
     number = {1},
     year = {2018},
     doi = {10.1016/j.crma.2017.11.015},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2017.11.015/}
}