1. On The Yielding of Soils
2. and , ‘Mechanical behaviour of an idealized wet clay’, Proc. European Conf. Soil Mechanics and Foundation Engineering, Vol 1, 1993, pp. 47-54.
3. and , Critical State Soil Mechanics, McGraw-Hill, New York, 1968.
4. and , ‘On the generalized stress-strain behaviour of wet clay’, in: Engineering Plasticity, Cambridge University Press, Cambridge, 1968, pp. 535-609.