Identification of 13 Cepheids and 333 other variables in M 31Y. C. Joshi, A. K. Pandey, D. Narasimha, R. Sagar and Y. Giraud-HéraudA&A, 402 1 (2003) 113-123DOI: https://doi.org/10.1051/0004-6361:20030136