Gustave Guillaume's Linguistics. From language to discourse

Although Gustave Guillaume (1883-1960) was one of the most influential philosophers in XXth Century French linguistics, his theory is largely unknown in the Spanish sphere. Nowadays, new research on his work has begun to develop, mostly, in the Universite de Paris III, Sorbonne Nouvelle. This paper analyses the way in which Guillaume reformulates Saussure's langue / parole dichotomy into the langue / discourse one; and then studies specific concepts involved in such proposed dichotomy that are essential from Guillaume's theory, such as: operative time, article, and incidence and decadence.