Patchara Pornsurat และผู้แต่งคนอื่นๆ. (2021) Linear inequations with 5-digit and regularity conditionson ordered ternary semigroups. <i>Songklanakarin Journal of Science an Technology (SJST)</i>, <i>43</i>(6), 1550-1555.Patchara Pornsurat และผู้แต่งคนอื่นๆ. "Linear inequations with 5-digit and regularity conditionson ordered ternary semigroups". Songklanakarin Journal of Science an Technology (SJST) 43 (2021):1550-1555.Patchara Pornsurat และผู้แต่งคนอื่นๆ. Linear inequations with 5-digit and regularity conditionson ordered ternary semigroups. Research and Development Office, Prince of Songkla University:ม.ป.ท. 2021.