  Analytical solutions of the Klein-Gordon equation are obtained by reducing
the radial part of the wave equation to a standard form of a second order
differential equation. Differential equations of this standard form are
solvable in terms of hypergeometric functions and we give an algebraic
formulation for the bound state wave functions and for the energy eigenvalues.
This formulation is applied for the solutions of the Klein-Gordon equation with
some diatomic potentials.
