Linear inequalities via least squaresÜbi, EvaldProceedings of the Estonian Academy of Sciences2013 / p. 238-248 https://artiklid.elnet.ee/record=b2651803*est Solving linear programming problems via weighted least-squares methodÜbi, Evald; Übi, JaanIJRDO - Journal of mathematics2017 / p. 13-21 https://ijrdo.org/index.php/m/article/view/1563/1473