 The German philosopher Erhard Scheibe (1927–2010) has published several books and numerous essays on various topics of philosophy of science; see, for example, Scheibe (2001). He has often commented on the programs of Sneed and Ludwig, such as in his “Comparison of two recent views on theories”, reprinted in Scheibe (2001, 175–194). Moreover, he published one of the earliest case studies of approximate theory reduction; see Scheibe 2001 (306–323) for the 1973 case study. 