L. I. Tyagunov, “On the problem of the relation between the classes $\mathscr{P}$ and $\mathscr{NP}$”, Dokl. Akad. Nauk SSSR, 284:3 (1985), 560–563
1983
2.
D. N. Gainanov, V. Yu. Novokshenov, L. I. Tyagunov, “Graphs generated by inconsistent systems of linear inequalities”, Mat. Zametki, 33:2 (1983), 293–300; Math. Notes, 33:2 (1983), 146–150
