Hjelmslev’s objective was to establish a framework for understanding communication as a formal system, and an important part of this was the development of precise terminology to describe the different parts of linguistic systems and their interrelatedness. The basic theoretical framework, called “Glossematics” was laid out in Hjelmslev’s two main works: Prolegomena to a theory of Language and Résumé of a theory of Language. However, since Hjelmslev's death in 1965 left his theories mostly on the programmatic level, the group that had formed around Hjelmslev and his glossematic theory dispersed—while the Copenhagen Linguistic Circle continued to exist, it was not really a "school" united by a common theoretical perspectives.