This paper is one of introducing for a wide circle whose aim is to develop the basis of EM theory.  
But the presented results are important for fields of any nature, in that number gravitational, hydrodynamical fields and flows, and others. In the future we will publish many results basing on this material, here and at the same time in our electronic journal SELF Transactions at  
http://angelfire.lycos.com/la3/selftrans 
We will be pleased if this material interests the colleagues. We will gladly discuss with you the most different aspects of this and all related problems.