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References
- ↑ Library of congress catalog entry, retrieved 2019-04-11.
- ↑ Richard Johnsonbaugh at the Mathematics Genealogy Project
- ↑ Review of Discrete Mathematics:
- Charles F. Kelemen (1987), American Mathematical Monthly, JSTOR 2322865, doi : 10.2307/2322865
- ↑ Reviews of Foundations of Mathematical Analysis:
- William Eames (1982), Mathematical Reviews, MR 0599741
- Wilfred Kaplan (1984), American Mathematical Monthly, JSTOR 2975675 2975675, doi : 10.2307/2975675
- H. Ahrens (1986), Biometrical Journal, doi : 10.1002/bimj.4710280112
- ↑ Review of Algorithms:
- Dean Kelley (2009), SIGACT News, doi : 10.1145/1556154.1556159
