1. Kruyer, J. and Garg, V. K., Hydrotransport 2, Paper F2, B.H.R.A., Cranfield, Bedford, England (Sept. 1972).
2. Kruyer, J. and Ellis, H. S., “Predicting the Required Liquid Throughput from the Capsule Velocity and Pressure Gradient in Capsule Pipelines”. Paper No. 33e, 4th Joint Chem. Eng. Conf., AIChE-CSChE, Vancouver, B.C. (Sept. 1978).
3. Singh, H., Quon, D. and Seyer, F. A. “A Theoretical Model for Laminar Pipe Flow of Capsules”, Paper No. 33i, 4th Joint Chem. Eng. Conf., AIChE-CSChE, Vancouver, B.C. (Sept. 1973).