E. Hardy, London, Pali Text Society, 1902, ASIN B0000CLJ95), especially the Introduction, "passim"*"Theri Gatha Commentary", "Peta Vatthu Commentary", and "Vimna Vutthu Commentary", all three published by the Pali Text Society.
* "Theri Gatha Commentary", "Peta Vatthu Commentary", and "Vimna Vutthu Commentary", all three published by the Pali Text Society.