in 
The marks in CJ and CK look like long accents, although the one in CJ is written a quaver later. Having compared it with similar b. 22, we consider the mark of CK to be more accurate. The versions of CB and EL cannot be authentic; however, the diminuendo hairpin in EL is one of the possible interpretations of the manuscripts.
Compare the passage in the sources »
category imprint: Graphic ambiguousness; Differences between sources; Corrections & alterations
issues: Long accents, Inaccuracies in JC, Balakirev's revisions
notation: Articulation, Accents, Hairpins