@misc{miguel2015study,
  title = {Study on Productivity in the Automotive Industry},
  author = {Estelles Miguel, Sofia and Andrés Romano, Carlos},
  eventtitle = {ICIEOM-CIO-IIE 2015, “XXI International Conference on Industrial Engineering and Operations Management”, “XIX Congreso de Ingeniería de Organización” and “International IIE Conference 2015” (Aveiro, Portugal. . 2015)},
  year = {2015}
}