“…Both product and process innovation are analysed by Fitjar and Rodríguez-Pose (2012), González-Pernía et al (2014), Nieto and Santamaria (2007) and Robin and Schubert (2013). R&D collaborations with universities or public research labs are most frequently investigated (Becker and Dietz, 2004;Belderbos et al, 2015;Broiwer andKleinknecht, 1996 González-Pernía et al, 2014), whereas citations are less frequently studied (Beise and Stahl, 1999;Jiang et al, 2010;Mansfield and Lee, 1996).…”