Cover -- Guest editorial -- Openness and front end of innovation: does customer type matter? -- Industrial marketing research: a bibliometric analysis (1990-2015) -- Internationalization as process of value distribution through innovation: polyhedral diagnosis of a "born global" firm -- Openness...

Innovation performance seems to rely on efficiently integrating and extending different pieces of various types of knowledge emerging from diverse external sources. Different research traditions have stressed both formal (FSK) and informal sources of knowledge (ISK) as innovation performance...