%0 Journal Article %T From Inspired Guess to Physical Theory: Finding a Theory of Gravitation %A Wagener P. %J Progress in Physics %D 2010 %I HEXIS (Arizona) %X A theory of gravitation satisfying all experimental results was previously proposed in this journal. The dynamics was determined by a proposed Lagrangian. In this paper it is shown how this Lagrangian can be derived heuristically. A Newtonian approach is used, as well as other methods. %K Newtonian potential %K Lagrange function %U http://ptep-online.com/index_files/2010/PP-20-03.PDF