6Salem M Z M, B6hm M, Srba J, et al.Evaluation of formaldehyde emission from different types of wood-based panels and flooring materials using different standard test methods[J]. Building and Environment, 2012,49 : 86-96.
7Khan M A, Ashraf S M.Studies on thermal characterization of lignin substituted phenol formaldehyde resin as wood adhesives[J]. Journal of Thermal Analysis and Calorimetry, 2007,89(3) : 993-1000.
8Siimer K, Kaljuvee T, Pehk T, et al.Thermal behaviour of melamine- modified urea- formaldehyde resins[J].Journal of Thermal Analysis and Calorimetry, 2010, 99 (3) : 755- 762.
