ROHANOVÁ, Alena - LAGAŇA, Rastislav - DUBOVSKÝ, Ján. Grading characteristics of structural Slovak spruce timber determined by ultrasonic and bending methods. In future of quality control for wood & wood products : final conference of COST Action E53 [elektronický zdroj]. - Edinburgh : Edinburgh Napier University, 2010, [9] p. APVV-0282-06 ; VEGA 1/0549/08. Názov z titulnej obrazovky. Dostupné na internete: <http://www.cte.napier.ac.uk/e53/47.pdf>