Bistrickas, V. J., and N. Šimelienė. “Discrete Multistage Optimization and Hierarchical Market”. Nonlinear Analysis: Modelling and Control 11, no. 2 (May 18, 2006): 149–156. Accessed October 8, 2026. https://zurnalai.vu.lt/nonlinear-analysis/article/view/14755.