Scarfato, Paola; Di Maio, Luciano; Incarnato, Loredana (16 October 2016). "Structure and physical-mechanical properties related to comfort of flexible polyurethane foams for mattress and effects of artificial weathering". Composites Part B. 109: 45–52. doi:10.1016/j.compositesb.2016.10.041.
Peterson, Bruce W. "Mr". Polyurethane Gel-Like Polymers, Methods and Use in Flexible Foams. Archived from the original on 2014-04-19. Retrieved 2014-04-18.
Peterson, Bruce W. "Mr". Polyurethane Gel-Like Polymers, Methods and Use in Flexible Foams. Archived from the original on 2014-04-19. Retrieved 2014-04-18.