Citation:
Ph. Pushnyakov, “On the Number of Edges in Induced Subgraphs of a Special Distance Graph”, Mat. Zametki, 99:4 (2016), 550–558; Math. Notes, 99:4 (2016), 545–551
Ph. A. Pushnyakov, “A new estimate for the number of edges in induced subgraphs of a special distance graph”, Problems Inform. Transmission, 51:4 (2015), 371–377