technological diversification and strategic alliances paola giuri john hagedoorn myriam mariani sant anna school of advanced studies pisa italy merit maastricht university camerino 2002 04 february lem laboratory economics management piazza dei martiri della libertà 33 i 56127 tel 39 050 883 341 fax 344 email sssup it web page http www working paper series 1 e mail j mw unimaas nl m abstract this examines empirically the relationship between internal profile through largest 219 industrial firms world wide explores three related issues first shows that is more pronounced than external second confirms idea product market finally by means multiple correlation analysis work