Christophe, I have reversed your edits because they are unjustified.  I have justified all of my statement with reference to multiple sources.  I am prepared to push on this matter until it goes to arbitration. Structure, Sign, and Play in the Discourse of the Human Sciences presents all of the core ideas of deconstruction and that was presented in 1966, OG was published one year later.  The most important influence oon Derrida's work is Heidegger and I have provided cistations for that and can provide more if needed. Lacan's influence on deconstruction is minor.  The term "deconstruction" is derived from Heidegger's destruktion.  Again, I can substantiate all of my claims with sources, you have none.  You can't use your interpretation of a text as a source.