Plovdiv University “P. Hilendarski”, Plovdiv, Bulgaria;
Plovdiv University “P. Hilendarski”, Plovdiv, Bulgaria;
Plovdiv University “P. Hilendarski”, Plovdiv, Bulgaria;
Copyright © 2012 Georgi Krastev, Kiril Kolikov, Yordan Epitropov et al. This is
an open access article distributed under the Creative Commons Attribution
License, which permits unrestricted use, distribution, and reproduction in any
medium, provided the original work is properly cited.
How to Cite this Article
Krastev, G. , Kolikov, K. and Epitropov, Y. (2012) Motion machines of second kind.
Natural Science,
4, 252-257. doi:
10.4236/ns.2012.44036.