@article{10_21136_CMJ_2021_0398_20,
     author = {Agnihotri, Rishabh and Chakraborty, Kalyan},
     title = {Sign changes of certain arithmetical function at prime powers},
     journal = {Czechoslovak Mathematical Journal},
     pages = {1221--1228},
     publisher = {mathdoc},
     volume = {71},
     number = {4},
     year = {2021},
     doi = {10.21136/CMJ.2021.0398-20},
     mrnumber = {4339124},
     zbl = {07442487},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2021.0398-20/}
}