Here's the AAVSO's VSX entry for CP Pup (Nova Pup 1942):
http://www.aavso.org/vsx/index.php?v....top&oid=26718
Some external references quoted in that are:
On the nature of CP Pup,
http://arxiv.org/pdf/1308.5175v1.pdf ;
The multiple periods and the magnetic nature of CP Pup,
http://arxiv.org/pdf/1303.2777v1.pdf
And here's another catalogue entry for CP Pup:
http://archive.stsci.edu/prepds/cvca...ect=everything
Cheers -