dim. in 
The dynamic and agogic indications of the final four-bar section clearly differ in the particular sources. However, only two basic versions are authentic – A1 and CJ and CK (the differences between both copies based on [A2] concern insignificant details only). The close resemblance of the version of CB to the one of EL is puzzling – according to us, however, the coincidence does not point to a common source, which is contradicted by other numerous differences between these sources, but to a similar way of thinking of Balakirev and the reviser of EL, who strived for simplified notation.
Compare the passage in the sources»
category imprint: Differences between sources
issues: Balakirev's revisions, Revisions in EL
notation: Verbal indications