© Universitatea din Bucuresti 2004. All rights reserved.
No part of this text may be reproduced in any form without written permission of the University of Bucharest, except for short quotations with the indication of the website address and the web page. This book was first published by the Editura Universitatii din Bucuresti under ISBN 973-558-028-4 and 973-558-029-2 Comments to:Prof. Univ. Dr. Gh. Câmpeanu , Prof. Univ. Dr. Doc. I. F. Dumitru . Last update feb. 2004. Text editor & Web design Radu Prejbeanu