The Master-Slave Dialectic and Recognition
The section usually referred to in English as the 'master-slave dialectic' occupies chapter IV.A of the Phenomenology of Spirit, titled 'Independence and Dependence of Self-Consciousness: Lordship and Bondage' (Herrschaft und Knechtschaft). It follows directly from Hegel's discussion of Desire (Begierde), in which self-consciousness first seeks certainty of itself by negating and consuming external objects, only to find this satisfaction fleeting, since the consumed object simply vanishes and leaves no lasting confirmation of the self. Hegel concludes that genuine self-certainty requires recognition (Anerkennung) from another self-consciousness, since only a consciousness that is itself acknowledged as independent by another independent consciousness can achieve stable standing as a self; self-consciousness, in Hegel's famous formulation, 'exists only in being acknowledged.'
Why do you think there's historiographical debate about "The Master-Slave Dialectic and Recognition"?