Badenhausen, K. (1995, August 1). Brands: The management factor. Financial World, 50–69.

Bainbridge, D. I.(1996). Intellectual property (3rd ed.). London, England: Pitman.

Feldwick, P. (1996). Do we really need brand equity? The Journal of Brand Management, 4(1), 9–28.

Nakamoto, M., & Pilling, D. (2004, August 23). Tough tasks ahead at Takeda. Financial Times.

Trott, P. (2011). Innovation management and new product development. Harlow, England: Pearson Education. (TSDAS Digital Library: HD45 Tro [5th ed.])

Waldmeir, P. (2002, January 10). If technology switches to the side of copyright. Financial Times, 15.