Selected results and open problems in a semiclassical theory of dense matter

This is a review of studies of the behaviour of materials under high pressure in Serbia in the second half of the last century.Theoretical foundations are presented,as well as some examples of the results and a selection of the open problems.Comment: 11 pages,no figure

Heating in collisions of solids:possible application to impact craters

Due to the importance of collisions and impacts in early phases of the evolution of the planetary system, it is interesting to estimate the heating of a solid target due to an impact in it . A physically simple calculation of the temperature to which a solid target heats up after the impact of a projectile with mass $m$ and speed $v$ is performed,and possibilities for the application of this result in planetology are pointed out.Comment: plain LaTeX, 9 page