Continuity and differentiability of the Moore-Penrose inverse in $C^*$-algebras

J. J. Koliha, “Continuity and differentiability of the Moore-Penrose inverse in $C^*$-algebras”, Math. Scand., vol. 88, no. 1, pp. 154–160, Mar. 2001, doi: 10.7146/math.scand.a-14320.