Repetitions concerning copper with right screen version (11)

I believe the answer is:

recurrences

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'repetitions' is the definition.
(I know this)

'concerning copper with right screen version' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'copper' becomes 'cu' (chemical symbol).
'with right' becomes 'r' (common abbreviation. I am not sure about the 'with' bit.).
'version' indicates anagramming the letters.
'screen' with letters rearranged gives 'rences'.
're'+'cu'+'r'+'rences'='RECURRENCES'

Can you help me to learn more?

(Another definition for recurrences that I've seen is " Heads of 1d, 7, 15 and 19, e.g.".)

I've seen this clue in the Sydney Morning Herald.

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