Knowledge distribution among market experts: a closer look into the efficiency of information gathering for innovation projects. - Christian Luthje; Christopher Lettl; Cornelius Herstatt (Int. J. Technol. Manag., 2003)

Management of "technology push" development projects. - Cornelius Herstatt; Christopher Lettl (Int. J. Technol. Manag., 2004)

Learning from users for radical innovation. - Christopher Lettl; Cornelius Herstatt; Hans-Georg Gemünden (Int. J. Technol. Manag., 2006)

Exploring How Lead Users Develop Radical Innovation: Opportunity Recognition and Exploitation in the Field of Medical Equipment Technology. - Christopher Lettl; Christoph Hienerth; Hans-Georg Gemünden (IEEE Trans. Engineering Management, 2008)

The Organizational Design of Large R&D Collaborations and Its Effect on Time and Budget Efficiency: The Contrast Between Blueprints and Reality. - Jan Kratzer; Hans-Georg Gemünden; Christopher Lettl (IEEE Trans. Engineering Management, 2011)

Heavy Medal - The Consequences of Introducing Symbolic Awards on Contribution Behavior in Online Communities. - Alexander Staub; Tom Grad; Christopher Lettl (ICIS, 2022)

What Do Crowd Equity Investors Do? Exploring Postinvestment Activities in Equity Crowd Funding. - Christian Garaus; Nadine Izdebski; Christopher Lettl (IEEE Trans. Engineering Management, 2023)

Competition and Collaboration in Crowdsourcing Communities: What happens when peers evaluate each other? - Christoph Riedl; Tom Grad; Christopher Lettl (CoRR, 2024)