Written about by several unrelated research groups and cited by many unrelated research groups would be a good start This applies both to the concept of process physics itself and to its viability as an explanation for dark matter separately Please see WP UNDUE for additional information about weight and WP RS for a description of what sources are and aren t considered to have weight in a scientific context Also please take a glance at WP COI as your first IP address suggests that you might have a vested interest in having PP prominently mentioned