We recently discovered that the cited-by counts delivered in our metadata for some items were incorrect. The data was incorrect from approximately 10 am EST yesterday (1/31) through 10 am EST today (2/1). We've identified and correct the issue and the counts
are currently correct are currently being corrected, we anticipate all data will be updated by 9 PM EST.
For those of you querying for cited-by matches, the matches provided were correct, this issue only affects the cited-by count delivered in our UNIXSD metadata.