Probably the most cited recent paper is "Differences in Frequency of Violence and Reported Injury Between Relationships With Reciprocal and Nonreciprocal Intimate Partner Violence" by Whittaker et al.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1854883/

This one has a bit of a summary and some other references.
"Domestic Violence is most Commonly Reciprocal: by McQueen
http://pb.rcpsych.org/content/35/1/33.1