Teaching Network Security in a Virtual Learning Environment. - Laura Bergström; Kaj Grahn; Krister Karlström; Göran Pulkkis; Peik Åström (J. Inf. Technol. Educ., 2004)

Current Network Security Software. - Göran Pulkkis; Kaj Grahn; Peik Åström (Encyclopedia of Information Science and Technology (I), 2005)

Mobile Virtual Private Networking. - Göran Pulkkis; Kaj Grahn; Mathias Mårtens; Jonny Mattsson (FIS, 2009)

Security and Trust of Public Key Cryptography Options for HIP. - Harri Forsgren; Kaj Grahn; Timo Karvi; Göran Pulkkis (CIT, 2010)

Security and Trust of Public Key Cryptography for HIP and HIP Multicast. - Amir K. C; Harri Forsgren; Kaj Grahn; Timo Karvi; Göran Pulkkis (Int. J. Dependable Trust. Inf. Syst., 2011)