This paper examines a number of the criticisms that citation analysis has b
een subjected to over the years. It is argued that many of these criticisms
have been based on only limited examinations of data in particular context
s and it remains unclear how broadly applicable these problems are to resea
rch conducted at different levels of analysis, in specific fields, and amon
g various national data sets. Relevant evidence is provided from analysis o
f Australian and international data. Citation analysis is likely to be most
reliable when data is aggregated and at the highly-cited end of the distri
bution. It is possible to make valid inferences about individual cases, alt
hough considerable caution should be used. Bibliometric measures should be
viewed as a useful supplement to other research evaluation measures rather
than as a replacement.