[1]
A. K. Bakhtin and Y. V. Zabolotnii, “Estimates of products of some powers of inner radii for multiconnected domains”,
Ukr. Mat. Zhurn.
, vol. 73, no. 9, pp. 1155–1169, Sep. 2021, doi:
10.37863/umzh.v73i9.6682
.