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Rudner, Richard S.,
Oplinger, D. W.,
Primack, Maxwell,
Ackermann, Robert,
Baumrin, Bernard H.,
Doehlert, D. and
Traumann, K. F. 1974.
“Discussion [of Rudner].” Philosophia Mathematica s1-11(1–2): 64–78, doi:
10.1093/philmat/s1-11.1-2.64.