A couple of resources: Robert McCabe, ;The Meaning of "Born of Water and the Spirit" in John 3:5, DBSJ 4: 1999, pp 85-107 . He helpfully goes through the main options and settles (as does Don Carson) on Ezekiel 36:25-27 as the most important background. Jacob Owuor, 'What "Being Born of Water and the Spirit" in John 3:5 means' (part 1) .
Living and preaching at the foot of the Cross