Complex sentence: Derrida first articulated différance in his discussion on Edmund Husserl in "Speech and Phenomena", but elaborated in it in various other works, most notably in his essay "Différance" and in various interviews collected in "Positions".
Split into simpler sentences: Derrida first articulated the thought of "différance" in his discussion on Edmund Husserl in "Speech and Phenomena". This was then elaborated in various other works, notably in his essay "Différance" and in various interviews collected in "Positions".