Hadwin Donald W.; Nordgren Eric A.: Reflexivity and direct sums. In: Acta scientiarum mathematicarum, (55) 1-2. pp. 181-197. (1991)
Nordgren Eric A.; Radjabalipour Mehdi; Radjavi Heydar; Rosenthal Peter: Algebras intertwining compact operators. In: Acta scientiarum mathematicarum, (39) 1-2. pp. 115-119. (1977)
Moore Berrien; Nordgren Eric A.: Remark on the Jordan model for contractions of class C.0. In: Acta scientiarum mathematicarum, (37) 3-4. pp. 307-312. (1975)
Nordgren Eric A.: The ring N+ is not adequate. In: Acta scientiarum mathematicarum, (36) 1-2. pp. 203-204. (1974)
Moore Berrien; Nordgren Eric A.: On quasi-equivalence and quasi-similarity. In: Acta scientiarum mathematicarum, (34). pp. 311-316. (1973)
Nordgren Eric A.: On quasi-equivalence of matrices over H∞. In: Acta scientiarum mathematicarum, (34). pp. 301-310. (1973)
Nordgren Eric A.; Radjavi Heydar; Rosenthal Peter: On density of transitive algebras : Eric A. Nordgren, Heydar Radjavi and Peter Rosenthal. In: Acta scientiarum mathematicarum, (30) 3-4. pp. 175-179. (1969)