The best work regarding the hanafi view on moon sighting which I have read is إرشاد أهل الملة إلى إثبات الأهلة by Allamah Bakhit Muti'iy. It is excellent and clears alot of of the misunderstandings ulema today and layman have regarding moon sighting and accepting information on moon sighting. Views of other madhaahib are also mentioned.