Hi Max, This work is a part of "GSM and GPRS Security Using OsmocomBB" thesis written by Francois Ponsgen and was published a quite time ago.
Moreover, I already have the changes in my local repo, which is mostly used for research purposes. I can push them, if it's really required. BTW: if I remember correctly, this work was done in NTNU ;) With best regards, Vadim Yanitskiy.