Elizabeth Woyke. "Identifying The Tech Leaders In LTE Wireless Patents". Forbes. 2011-09-21. 2012-03-06 tarixində arxivləşdirilib. İstifadə tarixi: March 10, 2012. Second comment by the author: "Thus, any analysis of essential LTE patents should take into account more than ETSI declarations."
Elizabeth Woyke. "Identifying The Tech Leaders In LTE Wireless Patents". Forbes. 2011-09-21. 2012-03-06 tarixində arxivləşdirilib. İstifadə tarixi: March 10, 2012. Second comment by the author: "Thus, any analysis of essential LTE patents should take into account more than ETSI declarations."