by Gillespie, B.A., Wadley, H.N.G.
Published in Journal of crystal growth (15.05.2009)

by Gillespie B.A, Liang T, Myers A.L
Published in Transactions of the ASAE (1975)

by Myers A.L, Gillespie B.A
Published in Transactions of the ASAE (1977)

by Myers, A.L, Kirschbaum, W.T, Gillespie, B.A, Hundtoft, E.B
Published in Transactions of the ASAE (01.01.1977)