[2] Vandenberg, P. (2009). Micro, small and medium-sized enterprises and the global economic crisis: impacts and policy responses. ILO.
[3] Gurmeet, S., & Belwal, R. (2008). Entrepreneurship and SMEs in Ethiopia: evaluating the role, prospects and problems faced by women in this emergent sector. Gender in management: an international journal, 23(2), 120-136.
[4] Okpara, J. O. (2011). Factors constraining the growth and survival of SMEs in Nigeria: implications for poverty alleviation.
Management research review,
34(2), 156-171.
https://doi.org/10.1108/01409171111102786
[5] Ayele, A. W., & Derseh, A. B. (2020). Challenges that hinder the sustainability of small and medium scale enterprises in East Gojjam Zone, Northern Ethiopia. International journal of development research, 10(07), 37926-37934. https://doi.org/10.37118/ijdr.19201.07.2020
[6] Evans, J. R., & Lindsay, W. M. (2014). An introduction to six sigma and process improvement. Cengage learning. Stamfort: Cengage Learning.
[7] Schroeder, R. G., Linderman, K., Liedtke, C., & Choo, A. S. (2008). Six Sigma: definition and underlying theory. Journal of operations management, 26(4), 536-554.
[8] Moosa, K., & Sajid, A. (2010). Critical analysis of Six Sigma implementation. Total quality management, 21(7), 745-759.
[9] Lei, G., Wang, T., Zhu, J., Guo, Y., & Wang, S. (2015). System-level design optimization method for electrical drive systems—Robust approach. IEEE transactions on industrial electronics, 62(8), 4702-4713.
[10] Smętkowska, M., & Mrugalska, B. (2018). Using Six Sigma DMAIC to improve the quality of the production process: a case study. Procedia-social and behavioral sciences, 238, 590-596.
[11] Ramanan, L., & Ramanakumar, K. P. V. (2014). Necessity of six sigma–as a measurement metric in measuring quality of higher education. Intnl journal of business management invention, 3(1), 28-30.
[12] Ramanan, L., Kumar, M., & Ramanakumar, K. P. V. (2014). Six sigma–DMAIC frame work for enhancing quality in engineering educational institutions. International journal of business management invention, 3(1), 36-40.
[13] Ali, A. Y. (2020). Six Sigma-DMAIC and food waste hierarchy-based framework for reducing food waste in University canteens in Ethiopia. International journal of research in industrial engineering, 9(1), 77-83.
[14] John, B., & Areshankar, A. (2018). Reduction of rework in bearing end plate using six sigma methodology: a case study. Journal of applied research on industrial engineering, 5(1), 10-26.
[15] Hernadewita, H., Ismail, M., Nurdin, M., & Kusumah, L. (2019). Improvement of magazine production quality using six sigma method: case study of a PT. XYZ. Journal of applied research on industrial engineering, 6(1), 71-79.
[16] Callan, B., & Guinet, J. (2000). Enhancing the competitiveness of SMEs through innovation. Proceedings of the conference for ministers responsible for SMEs and industry ministers. Conference conducted at the meeting of Economic Co-operation and Development, Bologna, Italy.
[17] Deeb, S., Bril-El Haouzi, H., Aubry, A., & Dassisti, M. (2018). A generic framework to support the implementation of six sigma approach in SMEs. IFAC-PapersOnLine, 51(11), 921-926.
[19] Garrido-Vega, P., Sacristán-Díaz, M., & Magaña-Ramírez, L. M. (2016). Six sigma in SMES with low production volumes. A successful experience in aeronautics.
Universia business review, (51), 52-71.
https://www.redalyc.org/pdf/433/43347130003.pdf
[20] Abbes, N., Sejri, N., Chaabouni, Y., & Cheikhrouhou, M. (2018, December). Application of Six Sigma in clothing SMEs: A case study. IOP conference series: materials science and engineering (Vol. 460, No. 1, p. 012009). Istanbul, Turkey: IOP Publishing.
[21] Amitrano, F. G., Estorilio, C. C. A., de Oliveira Franzosi Bessa, L., & Hatakeyama, K. (2016). Six Sigma application in small enterprise.
Concurrent engineering,
24(1), 69-82.
https://doi.org/10.1177/1063293X15594212
[22] Shrivastava, P. K. (2017). Implementing the lean Six Sigma as a strategy in a small medium enterprises (SMEs). International journal of bussiness administration and management, 7(1), 131-140.
[24] Dai, S., & Zhang, M. (2015, March). Study and analysis on Six Sigma management in SMEs.
2015 international conference on education technology, management and humanities science (ETMHS 2015). Atlantis Press.
https://doi.org/10.2991/etmhs-15.2015.251
[25] Fonseca, L. M. (2017). In search of six sigma in portuguese SMEs. International journal of industrial engineering and management, 8(2017), 31-38.
[26] Meshram, A. (2015). Importance of Six Sigma in small and medium enterprises to improve the productivity. International journal of engineering and management research (IJEMR), 5(1), 139-144.
Vijayaram, T. R., Sulaiman, S., Hamouda, A. M. S., & Ahmad, M. H. M. (2006). Foundry quality control aspects and prospects to reduce scrap rework and rejection in metal casting manufacturing industries. Journal of materials processing technology, 178(1-3), 39-43.