I have now gained permission and uploaded my most recent article on the use of parental language in small group settings in antiquity:

Philip A. Harland, “Familial Dimensions of Group Identity (II): ‘Mothers’ and ‘Fathers’ in Associations and Synagogues of the Greek World,” Journal for the Study of Judaism in the Persian, Hellenistic, and Roman Period 38 (2007) 57-79.

This article complements my earlier one on “brothers”:

Philip A. Harland, “Familial Dimensions of Group Identity: ‘Brothers’ (ΑΔΕΛΦΟΙ) in Associations of the Greek East,” Journal of Biblical Literature 124 (2005) 491-513.

These and other articles are also accessible from the publications page.