Cătinaş, E. “On the Convergence of Some Quasi-Newton Iterates Studied by I. Păvăloiu”. J. Numer. Anal. Approx. Theory, Vol. 44, no. 1, Dec. 2015, pp. 38-41, https://ictp.acad.ro/jnaat/journal/article/view/2015-vol44-no1-art3.