The socio-demographics of texting: An analysis of traffic data. - Rich Ling; Troels Fibæk Bertel; Pål Roe Sundsøy (New Media Soc., 2012)

"It's just not that exciting anymore": The changing centrality of SMS in the everyday lives of young Danes. - Troels Fibæk Bertel; Rich Ling (New Media Soc., 2016)