  We discuss three ways of obtaining the Born approximations for Coulomb
scattering: The standard way, making use of a convergence factor ("screening"),
Oppenheimer's way using cylindrical (instead of spherical) coordinates, and
finally Landau and Lifshitz' way. The last one although it does require some
background from the theory of generalized functions is nevertheless a very
instructive and important technique deserving more exposure to physicists.
