*If  are the solutions for a particular value of , then solutions for other values of  are obtained from the following integro-differential equations
*  For conservative case, this integral property reduces to 
*If the abbreviations  for brevity are introduced, then we have a relation stating  In the conservative, this reduces to 
*If the characteristic function is , where  are two constants, then we have .
*For conservative case, the solutions are not unique. If  are solutions of the original equation, then so are these two functions , where  is an arbitrary constant.