Benyuan Liu Cédric Westphal Donald F. Towsley Liaoruo Wang Dennis Goeckel Asymptotic Connectivity Properties of Cooperative Wireless Ad Hoc Networks. 1226-1237 2009 27 IEEE Journal on Selected Areas in Communications 7 http://dx.doi.org/10.1109/JSAC.2009.090918 db/journals/jsac/jsac27.html#LiuWTWG09