@INPROCEEDINGS {NG:2000a, title = {Cryopreservation of cassava and yam shoot tips by fast freezing}, author = {Ng, S. Y. C. and Ng, N. Q. }, booktitle = {Cryopreservation of tropical plant germplasm-current research progress and application. Rome, Italy: Japan International Research Center for Agricultural Sciences(JIRCAS); International Plant Genetic Resources Institute (IPGRI)}, year = {2000}, pages = {136--139}, note = {RTB; Root and Tuber}, }