Chartrand, Gary; Erdös, Paul; Oellermann, Ortrud R. How to define an irregular graph. (English) Zbl 0995.05516 Coll. Math. J. 19, No. 1, 36-42 (1988). Cited in 39 Documents MSC: 05C99 Graph theory PDFBibTeX XMLCite \textit{G. Chartrand} et al., Coll. Math. J. 19, No. 1, 36--42 (1988; Zbl 0995.05516) Full Text: DOI