  Long nanowires of degenerate semiconductor InSb in asbestos matrix (wire
diameter is around 50 \AA, length 0.1 - 1 mm) were prepared. Electrical
conduction of these nanowires is studied over a temperature range 1.5 - 350 K.
It is found that a zero-field electrical conduction is a power function of the
temperature $G\propto T^\alpha$ with the typical exponent $\alpha \approx 4$.
Current-voltage characteristics of such nanowires are found to be nonlinear and
at sufficiently low temperatures follows the power law $I\propto V^\beta$. It
is shown that the electrical conduction of these nanowires cannot be accounted
for in terms of ordinary single-electron theories and exhibits features
expected for impure Luttinger liquid. For a simple approximation of impure LL
as a pure one broken into drops by weak links, the estimated weak-link density
is around $10^3-10^4$ per cm.
