Mechanical and physical properties of thermally modified wood flour reinforced polypropylene compositesKallakas, Heikko; Martin, M.; Goljandin, Dmitri; Poltimäe, Triinu; Krumme, Andres; Kers, JaanAgronomy research2016 / p. 994-1003 : ill http://ise.elnet.ee/record=b2891902~S1*est