%0 Journal Article %A Esipova, Maria S. %A Yeats, Karen %T A result on the $c_2$ invariant for powers of primes %J Canadian mathematical bulletin %D 2023 %P 1164-1178 %V 66 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008439523000243/ %R 10.4153/S0008439523000243 %F 10_4153_S0008439523000243