Gonska, Heiner. “Sätze Vom Bohman-Korovkin-Typ für Lokalkonvexe Vektorverbände: Bohman–Korovkin Type Theorems for Locally Convex Vector Lattices”.
J. Numer. Anal. Approx. Theory, vol. 44, no. 1, Dec. 2015, pp. 62-68,
https://doi.org/10.33993/jnaat441-1061.