Wall, Stuart; Sonal Minocha; Rees, Bronwen (25. 8. 2009). International Business. Financial Times Prentice Hall. стр. 43. ISBN978-0-273-72372-1. „(...) patents, trademarks and copyrights. These are often referred to as intellectual property rights (...)”CS1 одржавање: Формат датума (веза)
doi.org
Lemley, Mark A.; Shapiro, Carl (2005). „Probabilistic Patents”. Journal of Economic Perspectives, Stanford Law and Economics Olin Working Paper No. 288. 19: 75. S2CID9296557. doi:10.2139/ssrn.567883.
semanticscholar.org
api.semanticscholar.org
Lemley, Mark A.; Shapiro, Carl (2005). „Probabilistic Patents”. Journal of Economic Perspectives, Stanford Law and Economics Olin Working Paper No. 288. 19: 75. S2CID9296557. doi:10.2139/ssrn.567883.