He Taught at the Kunstgewerbeshule Zurich and was one of the co-founders of Neue Grafik which was a very influential magazine that set out to show the significant trends for examination and discussion. Muller-Brockmann also published a book called Gestaltungsprobleme des Grafikers/ The graphic artist and his design problems in 1961. This became a leading document in spreading Swiss typography and it's methods to an international audience. This was helped by the fact that the German text was also supplemented by French and English parallel translations, which was quite common of the Swiss style. In his book, Muller-Brockmann laid down the defining principles of the Swiss International Style. They are; the striving for impersonality and objectivity, through an elimination of decorative or expressive effects and also through the application of an ordering grid. Type sizes and typefaces were also restricted with the use of sanserif typefaces, particularly Univers, Helvetica and Akzidenz, almost explicitly. Text was also unjustified and set flush left, ragged right with centred text looked down upon. Photography replaced illustrations, with drawings only allowed a place in diagrams. Swiss typography carried out the desires of the pre-war pioneers for objectivity in visual communication. It was an international force in the new profession and helped give "information design" a typographic language and discipline before the arrival of photo-typesetting and computer graphics.
It was at this point in the early 1960's that high Modernism became established in the Academy and therefore was felt to be Academic by a new generation of poets, painters and musicians. Swiss typography was starting to be seen as formulaic and was used largely by companies as it was a cheap and effective way to incorporate design. By the 1970's the older generation of Swiss typographers were no longer active and so under the leadership of Wolfgang Weingart at the Basel School of Design in Switzerland, the designers that emerge in the 70s" began to break some of the essential principles of the Swiss International Style.