Ördögh, M., et al. “In Vitro Propagation of ’Echo’ Cultivars of Eustoma Grandiflorum (Raf.) Shinn”.
International Journal of Horticultural Science
, vol. 11, no. 2, May 2005, pp. 87-91.,
https://doi.org/10.31421/IJHS/11/2/585
.