por Attenborough, K | Clark, S., coaut.Utley, W.A., coaut | Building Research Establishment (Inglaterra).
por Midgley, H.G | Midgley, A., coaut | Building Research Establishment (Inglaterra).
por Malhotra, H.L | Building Research Establishment (Inglaterra).
por Pye, P.W | Warlow, W.J., coaut | Building Research Establishment (Inglaterra).