@article{136926, author = {Brian Zimmerman and Coll{eacute} r}, title = {Standardization of 63Ni by 4πβ Liquid Scintillation Spectrometry with 3H-Standard Efficiency Tracing}, year = {1997}, number = {102}, month = {1997-01-01}, publisher = {Journal of Research of the National Institute of Standards and Technology}, language = {en}, }