1. The load carrying capacities of circular plates;Hopkins, H. G.;J. Mech. Phys. Solids,1953
2. McGraw-Hill Series in Engineering Sciences;Hodge, Philip G., Jr.,1959
3. On the plastic theory of plates;Hopkins, H. G.;Proc. Roy. Soc. London Ser. A,1957
4. On the flexure of plastic plates;Lerner, S.;J. Appl. Mech.,1960