Em gửi lại vậy:
1) Somaclonal variation - Genetic basis and breeding applications
Trends in Genetics, Volume 5, 1989, Pages 46-50
2) Sources and Frequency of Somaclonal Variation
Robert M. Shrvin, Kenneth D. McPheeters, and Margaret Norton
HortScience, November 1994 (Vol. 29, No. 11) 1232-1237