@article {Hartmann:March-April 2006:0895-6308:25, author = "Hartmann, George C.", author = "Myers, Mark B.", author = "Rosenbloom, Richard S.", title = "Planning Your Firm's RD Investment", journal = "Research-Technology Management", volume = "49", year = "March-April 2006", abstract = "Setting the level of R&D spending is one of the most important strategic decisions made by top management of technology-based firms. The delay between the commitment to expenditure for R&D and the realization of consequent revenues and profits complicates the analysis of R&D budgets. Common budgeting practices often fail to reflect the likely revenue consequences of incremental changes in aggregate spending for R&D. The authors suggest that this "missing dimension" should be incorporated in analysis of budgeting choices. They propose a framework for R&D budgeting and incorporate a measure of the missing dimension, named "R&D Gain," defined as the ratio of the lifetime revenue of products launched in a particular year to the total investment needed to develop those products. This Gain can be estimated from historical data on revenues and R&D expenditures, and used to project future revenues.", pages = "25-36(12)", url = "http://www.ingentaconnect.com/content/iri/rtm/2006/00000049/00000002/art00005" }