\Bibitem{Gol53} \by P.~A.~Gol'berg \paper Sylow bases of infinite groups \jour Sb. Math. \yr 1953 \vol 74 \issue 2 \mathnet{http://mi.mathnet.ru/eng/sm5316} \mathscinet{https://mathscinet.ams.org/mathscinet-getitem?mr=55342} \zmath{https://zbmath.org/?q=an:0050.01802}