A MAC protocol for the integrated wireless access network. - Roman Pichna; Qiang Wang (PIMRC, 1995)

A Medium-Access Control Protocol for a Cellular Packet CDMA Carrying Multirate Traffic. - Roman Pichna; Qiang Wang (IEEE J. Sel. Areas Commun., 1996)

Wireless Internet - IMT-2000/Wireless LAN interworking. - Roman Pichna; Tero Ojanperä; Harri Posti; Jouni Karppinen (J. Commun. Networks, 2000)

Handoff in hybrid mobile data networks. - Kaveh Pahlavan; Prashant Krishnamurthy; Ahmad Hatami; Mika Ylianttila; Juha-Pekka Mäkelä; Roman Pichna; Jari Vallstron (IEEE Wirel. Commun., 2000)

Interworking architecture between 3GPP and WLAN systems. - Kalle Ahmavaara; Henry Haverinen; Roman Pichna (IEEE Commun. Mag., 2003)