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Author: Entringer, Roger C.

• Entringer, Roger C.; Tolman, L. Kirk: Characterizations of graphs having orientations satisfying local degree restrictions. (English). Czechoslovak Mathematical Journal, vol. 28 (1978), issue 1, pp. 108-119
• Entringer, Roger C.; Jackson, D. E.; Snyder, D. A.: Distance in graphs. (English). Czechoslovak Mathematical Journal, vol. 26 (1976), issue 2, pp. 283-296