1. Burrell, A. M. (2003).Genetic Variation in Somatic Embryogenesis ofRosa hybridaL.M.Sc. Thesis. Texas A&M University, Houston, TX, USA. 45 pp.
2. Matthews, D., Mottley, J., Yokoya, K. and Roberts, A.V. (1994). Regeneration of plants from protoplasts ofRosaspecies. In:Biotechnology in Agriculture and Forestry.(Bajaj, Y.P.S., Ed.). Springer-Verlag, Berlin, Germany. 146–160.