  This paper studies ICMEs detected by both Voyager spacecraft during
propagation from 1 to 10 AU, with observations from 1977 to 1980. ICMEs are
detected by using several signatures in the in-situ data, the primary one being
the low measured to expected proton temperature ratio. We found 21 events
common to both spacecraft and study their internal structure in terms of plasma
and magnetic field properties. We find that ICMEs are expanding as they
propagate outwards, with decreasing density and magnetic field intensities, in
agreement with previous studies. We first carry out a statistical study and
then a detailed analysis of each case. Furthermore, we analyse one case in
which a shock can be clearly detected by both spacecraft. The methods described
here can be interesting for other studies combining data sets from heliospheric
missions. Furthermore, they highlight the importance of exploiting useful data
from past missions.
