The Portable Educational Network (PEN). - Lance J. Hoffman; Timothy Rosenberg; Steve Willmore (IAW, 2003)

Exploring a National Cybersecurity Exercise for Universities. - Lance J. Hoffman; Timothy Rosenberg; Ronald Dodge; Daniel Ragsdale (IEEE Secur. Priv., 2005)

Taking Networks on the Road: Portable Solutions for Security Educators. - Timothy Rosenberg; Lance J. Hoffman (IEEE Secur. Priv., 2006)

Taking the network on the road: Portable network solutions for computer security educators. - Timothy Rosenberg; Lance J. Hoffman (ACM J. Educ. Resour. Comput., 2006)