A lot of research has been done and many articles have been published on the treatment of HIE in newborns. Also, a group of authors under the supervision of the Iranian Neonatal Health Department have compiled a book titled Diagnosis, Prevention and Treatment of Perinatal Asphyxia, which is extracted from the Gonabad University of Medical Sciences website, which you can read.
Handbook of prevention, diagnosis and treatment of perinatal asphyxia
Effects of hypothermia on death among neonates with HIE A review & meta analysis-2021
Hypothermia for Neonatal HIE- review and meta analysis