1. J.D. Hilbert, The Best of Bulk Solids Handling, Pneumatic Conveying of Bulk Powders, Vol. D/86, Trans Tech Publications, 1984, pp. 107–110.
2. V.K. Agarwal, D. Mills, J.D. Mason, The Best of Bulk Solids Handling, Pneumatic Conveying of Bulk Powders, Vol. D/86, Trans Tech Publications, 1985, pp. 111–116.
3. T.A. Bell, A. Boxman, J.B. Jacobs, Proceedings of The 5th World Congress of Chemical Engineering, Vol. V, 1996, pp. 238–243.
4. H. Kalman, D. Goder, Proceedings of The 5th World Congress of Chemical Engineering, Vol. VI, 1996, pp. 411–416.