Please note that "Chalitzah" refers to the rite which frees a man and woman from their obligation to perform levirate marriage.
Definition of term "Chalitzah": Yevamot 102b
Whether the shoe-removal is necessary: Yevamot 104a-b
Removing the shoe from most of the heel: Yevamot 102a
Whether she must be the un-tier and remover of the shoe: Yevamot 102a
Where she is an amputee: Yevamot 105a
Destruction of the shoe without removing it: Yevamot 102a
Requirement for intent: Yevamot 102b
Removal without intent (i.e. if she grew up with her brother-in-law, and at one point removed his shoe): Yevamot 102b
Whether he must press his foot to the ground following the shoe's removal: Yevamot 103a
What if he normally walks on the sides of his feet: Yevamot 103a