On Uniqueness of Best L1-Approximation of Disjoint Intervals. András Kroó — 1986 Mathematische Zeitschrift
Interpolatory Properties of Best L1-approximants. Franz Peherstorfer; András Kroó — 1987 Mathematische Zeitschrift
On norms of factors of multivariate polynomials on convex bodies. Kroó, András — 2006 ETNA. Electronic Transactions on Numerical Analysis [electronic only]
Strong uniqueness. Kroó, András; Pinkus, Allan — 2010 Surveys in Approximation Theory (SAT)[electronic only]