WU, Xiaoqin P. P. Triple-zero singularity of a Kaldor–Kalecki model of business cycles with delay. Nonlinear Analysis: Modelling and Control, [S. l.], v. 18, n. 3, p. 359–376, 2013. DOI: 10.15388/NA.18.3.14015. Disponível em: https://www.zurnalai.vu.lt/nonlinear-analysis/article/view/14015. Acesso em: 15 jun. 2025.