Structure of polycondensates from hydroxymethylphenolsChristjanson, Peep; Pehk, Tõnis; Siimer, Kadri; Paju, JaneJournal of applied polymer science2007 / 2, p. 1226-1234 Structure of polycondensates from hydroxymethylphenolsChristjanson, Peep; Pehk, Tõnis; Siimer, Kadri; Paju, JaneJournal of applied polymer science2008 / 2, p. 1226-1234 : ill https://www.researchgate.net/publication/243894123_Structure_of_polycondensates_from_hydroxymethylphenols