Studies regarding the use of a neuro-fuzzy mathematical model in order to determine the technological parameters of the polyethylene pipes butt welding processAlina Gligor, Marcel-Letitiu Balan, Letitia-Corina Balan and Horatiu-Daniel CrisanMATEC Web Conf., 121 (2017) 09004DOI: https://doi.org/10.1051/matecconf/201712109004