Value Factory 2021. 02. 18.-19. https://www.eventleaf.com/ValueFactory-February2021

MSZ EN 12973:2020 http://www.mszt.hu/web/guest/ingyenes-szabvanylista;jsessionid=D75D5A29A65C1C11448549D61ACBA91E?p_p_id=msztwebshop_WAR_MsztWAportlet&p_p_lifecycle=1&p_p_state=normal&p_p_mode=view&p_p_col_id=column-1&p_p_col_count=1&_msztwebshop_WAR_MsztWAportlet_ref=115464&_msztwebshop_WAR_MsztWAportlet_javax.portlet.action=search

June 5-9, 2021. https://www.valuesummit2021.org/ https://www.value-eng.org/page/2021VirtualValueSummit