Howorka, Edward (1977), "A characterization of distance-hereditary graphs", The Quarterly Journal of Mathematics, Second Series, 28 (112): 417–420, doi:10.1093/qmath/28.4.417, MR0485544.
Diestel, Reinhard (2006), Graph Theory, Graduate texts in mathematics, vol. 173, Springer-Verlag, pp. 3–4, ISBN9783540261834.
doi.org
Howorka, Edward (1977), "A characterization of distance-hereditary graphs", The Quarterly Journal of Mathematics, Second Series, 28 (112): 417–420, doi:10.1093/qmath/28.4.417, MR0485544.