Automatic products identification methodPõlder, Ahti; Juurma, Märt; Tamre, MartProceedings of the 8th International Conference of DAAAM Baltic Industrial Engineering, 19-21st April 2012, Tallinn, Estonia. 12012 / p. 338-344 : ill Observable space of the nonlinear control system on a homogeneous time scaleKaparin, Vadim; Kotta, Ülle; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2014 / p. 11-25 https://artiklid.elnet.ee/record=b2665198*est Wood products automatic identification based on fingerprint methodPõlder, Ahti; Juurma, Märt; Tamre, MartJournal of vibroengineering2012 / p. 477-482 https://www.researchgate.net/publication/285309496_Wood_products_automatic_identification_based_on_fingerprint_method