 The theoretical concepts of structuralism in architecture were developed mainly in Europe and Japan, with important contributions of the United States and Canada.Contributions in architectural magazines by Arnulf Lüchinger and his compilation of structuralist projects published in 1980 "(Structuralism in Architecture and Urban Planning)" introduced structuralism to a wider audience.Important assessments concerning structuralist theory in architecture have been made by Kenneth Frampton and Jürgen Joedicke.