1. van Diepen, C. A., Wolf, J., van Keulen, H., & Rappoldt, C. (1989). WOFOST: A simulation model of crop production. Soil Use and Management, 5(1), 16–24.
2. Heijne, B., van Hermon, E. A., Smelt, J. H., & Huijsmans, J. F. M. (1993). Biological evaluation of crop protection windtunnel sprayers with reduced emission to the environment in apple growing. In Proceedings A.N.P.P.-B.C.P.C. second international symposium on pesticides application, Strasbourg, 22–24 Sept. 1993. BCPC, Vol 1/2, pp. 321–330.
3. Huijsmans, J. F. M., Porskamp, H. A. J., & Heijne, B. (1993). Orchard tunnel sprayers with reduced emission to the environment. Results of deposition and emission of new types of orchard sprayers. In Proceedings A.N.P.P.-B.C.P.C. second international symposium on pesticides application, Strasbourg, 22–24 Sept. 1993. BCPC, Vol 1/2, pp. 297–304.
4. Huijsmans, J. F. M., Porskamp, H. A. J., & van de Zande, J. C. (1997). Spray drift reduction in crop protection application technology. Evaluation of spray drift in orchards, field crops and nursery tree crops spraying (state-of-the-art December 1996). In Institute of agricultural and environmental engineering, IMAG-DLO report 97-04, Wageningen. 41p (In Dutch with English summary).
5. Holterman, H. J., van de Zande, J. C., Porskamp, H. A. J., & Huijsmans, J. F. M. (1997). Modelling spray drift from boom sprayers. Computers and Electronics in Agriculture, 19, 1–22.