Lichtenberg, F., & Potterie, B. v. P. d. l. (1996). International R & D spillovers: A re-examination. National Bureau of Economic Research.
Chicagoスタイル(17版)引用形式Lichtenberg, Frank, , Bruno van Pottelsberghe de la Potterie. International R & D Spillovers: A Re-examination. Cambridge: National Bureau of Economic Research, 1996.
MLA(9版)引用形式Lichtenberg, Frank, , Bruno van Pottelsberghe de la Potterie. International R & D Spillovers: A Re-examination. National Bureau of Economic Research, 1996.
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