1. Becwar MR, Noland TL, Wann SR (1987) Plant Cell Rep 6:35?38
2. Becwar MR, Wann SR, Johnson MA, Verhagen SA, Feirer RP, Nagmani R (1988) In: Ahuja MR (ed) Somatic Cell Genetics of Woody Plants, Kluwer Academic Publishers, Dordrecht Boston London, pp 1?13
3. Berlyn GP, Miksche JP (1976) Botanical microtechnique and cytochemistry. Iowa State Univ, Ames
4. Boulay MP, Gupta PK, Krogstrup P, Durzan DJ (1988) Plant Cell Rep 7:134?137
5. Bucholz JT (1918) Bot Gaz 66:185?228