Chú thích Lan tỏa kiến ​​thức

  1. 1 2 3 4 5 Carlino, Gerald A. (2001) Business Review Knowledge Spillovers: Cities' Role in the New Economy. Q4 2001.
  2. ↑ Jaffe, Adam B.; Trajtenberg, Manuel; Fogarty, Michael S. (May, 2000) The American Economic Review Knowledge Spillovers and Patent Citations:Evidence from a Survey of Inventors. Vol. 90, No. 2, Papers and Proceedings of the One Hundred Twelfth Annual Meeting of the American Economic Association, pp. 215-218.
  3. ↑ Romer, Paul M. (tháng 5 năm 1987). The American Economic Review 77 (2): 56–62.  |tựa đề= trống hay bị thiếu (trợ giúp)