The group studied dissections of rectangles into squares, especially the 'perfect' squared square, a square that is divided into a number of smaller squares, no two of which are the same size. Publications under the name of 'Blanche Descartes' or 'F. de Carteblanche' continued to appear into the 1980s. The group also published more mainstream articles under their own names, the final one being R.L. Brooks, C.A.B. Smith, A.H. Stone and W.T. Tutte, 'Determinants and current flows in electric networks', Discrete Math., Vol.