by Cooper K.M, Marshall R.R
Published in Acta Horticulturae (Netherlands). no. 297 (1992)

by Warrington I.J, Greer D.H, Snowball A.M, Woolley D.J
Published in Acta Horticulturae (Netherlands). no. 297 (1992)

by Brook P.J
Published in Acta Horticulturae (Netherlands). no. 297 (1992)

by Anvari F, Ebrahimi Y, Alian Y.M
Published in Acta Horticulturae (Netherlands). no. 297 (1992)

by Gouk S.C, Hoyte S.M, Voyle M.D, Bedford R.J
Published in Acta Horticulturae (Netherlands). no. 297 (1992)