Graves, William H.; Davis, Robert L.; Wright, Fred B., Introduction. In: Proceedings of the Conference on Integration, Topology, and Geometry in Linear Spaces (Univ. North Carolina, Chapel Hill, N.C., 1979), pp. vii—ix, Contemporary Mathematics 2, Amer. Math. Soc., Providence, R.I., 1980. MR621848 (This is an introduction to the collection of papers dedicated to the memory of B. J. Pettis.)