1. T. van Aardenne-Ehrenfest and N. G. de Bruijn, Circuits and trees in oriented linear graphs, Simon Stevin 28 (1951), pp. 203–217.
2. T. M. Apostol, Introduction to Analytic Number Theory, Narosa Publishing, Springer Verlag, New Delhi, Chennai, Mumbai, 1998.
3. J. Baker, De Bruijn graphs and their applications to fault tolerant networks, Masters thesis, Oregon State University, 2011.
4. N. G. de Bruijn, A Combinatorial Problem, Nederl. Akad. Wetensch. Proc. 49 (1946), pp. 758–764.
5. H.L. Buchanan, A. Knopfmacher, M.E. Mays, On the cyclotomic identity and related product expansions, Australas. J. Combin. 8 (1993), pp. 233–245.