Many people have asked for the codes in the papers above. I have codes written by Yiming Wang under my supervision when he was a Ph.D. student here. Instead of letting those age-old codes sit on my shelf doing nothing, I am givin them away with no support. If you find the codes useful, just acknowledge us. I looked through the code quickly. It seems that we wrote a vector addtion theorem by calling the scalar addition theorem (one of the suggestions in the paper). I can't find the code that does it directly--probably tucked away somewhere else. The translators are called alpha, beta, and alpha as are named in my book WFIM. Also, if any one of you care to translate the codes to C or C++, I will appreciate receiving a copy.

Here are other gems on efficient addition theorem calculation if you want to translate only in the z direction. One can perform a general translation by first rotating the coordinates, followed by a z translation, and then by a back rotation.