H. Hakala
发表
H. Hakala,
1989,
Conference Record of papers presented at the First Vehicle Navigation and Information Systems Conference (VNIS '89).
H. Hakala,
J. Kaikkonen,
1990,
1990 IEEE International Conference on Systems Engineering.
Pentti Mattila,
R. Suoranta,
H. Hakala,
1992,
IEEE 1992 Ultrasonics Symposium Proceedings.
H. Hakala,
V. Santti,
H. Hakala,
1992,
Singapore International Conference on Intelligent Control and Instrumentation [Proceedings 1992].
H. Hakala,
H. Hakala,
1995
.