1. Atiyah, M. F., Macdonald, I. G. (1969). Introduction to Commutative Algebra. Reading, MA: Addison-Wesley.
2. Equality of ordinary and symbolic powers of edge ideals of weighted oriented graphs
3. Banerjee A. Das K. K. Selvaraja S. (2021). Ordinary and symbolic powers of edge ideals of weighted oriented graphs. Preprint 2021. https://arxiv.org/abs/2105.14605.
4. Bang-Jensen, J., Gutin, G. (2006). Digraphs: Theory, Algorithms and Applications. Springer Monographs in Mathematics. London: Springer.
5. Bruns W. Ichim B. Römer T. Sieg R. Söger C. Normaliz. Algorithms for rational cones and affine monoids. Available at https://normaliz.uos.de.