ARAUJO-PARDO, Gabriela, KISS, György in MONTEJANO, Amanda, 2015, On the balanced upper chromatic number of cyclic projective planes and projective spaces. [na spletu]. 2015. Vol. 338, no. 12, p. 2562–2571. [Dostopano 13 april 2025]. DOI 10.1016/j.disc.2015.06.013. Pridobljeno s: http://ac.els-cdn.com/S0012365X15002459/1-s2.0-S0012365X15002459-main.pdf?_tid=6bc7ad2c-d969-11e5-a440-00000aacb35e&acdnat=1456148430_2aa8cbb28c00d57888a9055b1ad66a6e