Chanchai Laoha และ Seekharin Sukto. (2016) Opportunities for improvement in five groups of SMEs by a new lean assessment tool. <i>KKU Engineering Journal</i>, <i>43</i>(S2), 342-345.Chanchai Laoha และ Seekharin Sukto. "Opportunities for improvement in five groups of SMEs by a new lean assessment tool". KKU Engineering Journal 43 (2016):342-345.Chanchai Laoha และ Seekharin Sukto. Opportunities for improvement in five groups of SMEs by a new lean assessment tool. Faculty of Engineering, Khon Kaen University:ม.ป.ท. 2016.