The korban may come from maaser sheni funds as well as ordinary funds: Chagigah 7b-8a
The blessing on this korban: Pesachim 121a; Zevachim 37a
If one made the blessing of the korban pesach on the korban chagigah, or vice versa: Pesachim 121a; Zevachim 37a
Bringing this offering on Pesach, itself: Temurah 14b
Selling a portion of the offering to someone: Temurah 30b
Korban chagigah requires semichah - leaning on the animal by the bringer of the korban: Pesachim 96b, 97a; Zevachim 9a
Korban chagigah requires libations: Pesachim 96b, 97a; Zevachim 9a
The chest and thigh-bone are raised: Pesachim 96b, 97a; Zevachim 9a
How long one may eat the meat from this korban: Zevachim 36a