@article{10_4153_S0008439523000243,
     author = {Esipova, Maria S. and Yeats, Karen},
     title = {A result on the $c_2$ invariant for powers of primes},
     journal = {Canadian mathematical bulletin},
     pages = {1164--1178},
     year = {2023},
     volume = {66},
     number = {4},
     doi = {10.4153/S0008439523000243},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439523000243/}
}