Bondarenko, V. M. and Stepochkina, M. V. (2009) “Description of posets critical with respect to the nonnegativity of the quadratic Tits form”, Ukrains’kyi Matematychnyi Zhurnal, 61(5), pp. 611-624. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3045 (Accessed: 26April2024).