U. Felgner's articles:
| Title |
| [1971c], Comparison of the axioms of local and universal choice, Felgner-1971c |
| [1973], Variants of the axiom of choice in set theory with atoms, Felgner-Jech-1973 |
| [1971b], Uber das Ordnungstheorem, Felgner-1971b |
| [1999], Independence of the Boolean prime ideal theorem from the order extension principle, Felgner-Truss-1999 |
| [1975], On \(\aleph_0\)-categorical extra-special \(p\)-groups, Felgner-1975 |
| [1974], Abzählbarkeit und Wohlordenbarkeit, Felgner-1974 |
| [1969], Die Existenz wohlgenordneter konfinaler Teilmengen in Ketten und das Aus-wahl-axiom, Felgner-1969 |
| [1978], Well ordered subclasses of proper classes, Felgner-Flannagan-1978 |
U. Felgner excerpts: