Lopez-Gonzalez, E.; Salmazo, L. O.; Lopez-Gil, A.; Laguna-Gutierrez, E.; Rodriguez-Perez, M. A. Analysis of the foaming mechanisms of materials based on high-density polyethylene (HDPE) crosslinked with different irradiation doses. Journal of Applied Polymer Science, 2018, 135, 42746(1)-46276(12).