Urea-formaldehyde resins in Estonia : manufacturing and characterisationSiimer, Kadri; Christjanson, Peep; Pehk, Tõnis; Kaljuvee, Tiit; Suurpere, Aime; O'Brock, D.; Saks, Imre; Lasn, IlmarBaltic Polymer Symposium 2006 : September 20-22, 2006 : programme and proceedings2006 / p. 83