1. Niebles, E.E. and Arnedo, W.G., Welding procedures and welder qualifications: a proposal for teaching and application guide for the industry, Informacion tecnologica [online]. 20(3), pp. 19-30, 2009. Available at: https://www.scopus.com/record/display.uri?eid=2-s2.0-67650726936&origin=inward&txGid=5a0414b44331b6810aa2cbd566ee1274
2. Mendoza-Haro, E.I. and Robles-Salguero, R.E., Recycling of waste oils for power transmission in industry and service in Milagro city Ecuador, Universidad, Ciencia y Tecnologia 19(77), pp. 160-165, 2015.
3. Flores, C.E., Buenas prácticas de manufactura (BPM), Revista de Ingenieria Primero. 20, pp. 122-141, 2010.
4. Partington, E., Stainless steel in the food and beverage industry, Matrials Applied. 7, Fairfor (UK), 2006.
5. Shirwaikar, C.V. and Reddy, G.P., Purging with nitrogen in the welding of austenitic stainless steels, (n.d.), pp. 12-15, 1975.