AT&T - BT - KDD international ISDN. - Eligio Clapcich; Steven D. Akers; Ken-ichi Nishimura; S. Robertson (NOMS, 1992)

Transmission performance of 64 kbps switched digital international ISDN connections. - Yutaka Yamamoto; Fumio Inumaru; Steven D. Akers; Ken-ichi Nishimura (IEEE Trans. Commun., 1994)