1. Naylor AF: On the probable evolution of the digital environment for radiology. S CAR 90: Computer applications to assist radiology. Symposia Foundation, Carlsbad, CA, 1990, pp 332–338
2. Naylor AF: A quantitative projection of digital environment activity for radiology departments. S CAR 90: Computer applications to assist radiology. Symposia Foundation, Carlsbad, CA, 1990, pp 339–349