Introduction Authors L. Ladó Citation data from Crossref and Scopus PDF How to Cite Ladó, L. “Introduction”, Periodica Polytechnica Mechanical Engineering, 30(3-4), p. 1, 1986. More Citation Formats Periodica Polytechnica Numbered ACM ABNT Chicago Harvard IEEE Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Issue Vol. 30 No. 3-4 (1986) Section Articles