U. De Pra
发表
F. Frebel,
X. Breuer,
U. De Pra,
1999,
21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007).
U. De Pra,
H. Kuyken,
D. Baert,
1998,
INTELEC - Twentieth International Telecommunications Energy Conference (Cat. No.98CH36263).
U. De Pra,
H. Kuyken,
1993,
Proceedings of Intelec 93: 15th International Telecommunications Energy Conference.