1. The generalized Whitehead product;Arkowitz;Pacif. J. Math.,1962
2. Binary operations on sets of mapping classes;Copeland;Mich. Math. J.,1959
3. Groupes d'homotopie et dualité. Groupes absolus;Eckmann;C. R. Hebd. Séanc. Acad. Sci., Paris,1958
4. A natural transformation in homotopy theory;Eckman;Math. Z.,1963
5. On the decomposition of spaces in cartesian products and unions;Ganea;Proc. Camb. Phil. Soc. Math. Phys. Sci.,1959