Rheological behaviour of urea-formaldehyde adhesive resinsChristjanson, Peep; Suurpere, Aime; Siimer, Kadri11th Annual Polychar World Forum on Advanced Materials : POLYCHAR-11 : January 7-10, 2003 & Short course January 6, 2003 : program and book of abstracts2003 / p. 112 https://www.degruyter.com/document/doi/10.1515/epoly.2004.4.1.398/html?lang=en