Brier, Søren. "The cybersemiotic model of communication: An evolutionary model of the threshold between semiosis and informational exchange" Semiotica, 2006.158 (2006): 255-296. Retrieved 19 May. 2013, from doi:10.1515/SEM.2006.008

Brier, S. (2006). The cybersemiotic model of communication: An evolutionary model of the threshold between semiosis and informational exchange. Semiotica, 2006(158), pp. 1-456. Retrieved 19 May. 2013, from doi:10.1515/SEM.2006.008

Brier, Søren. 2006. The cybersemiotic model of communication: An evolutionary model of the threshold between semiosis and informational exchange. Semiotica. 2006(158): 1-456. Retrieved 19 May. 2013, from doi:10.1515/SEM.2006.008