Variable stars in nearby galaxies - V. Search for Cepheids in field A of NGC 6822 E. Antonello, D. Fugazza, L. Mantegazza, M. Stefanon and S. Covino A&A, 386 3 (2002) 860-864 Published online: 15 May 2002 DOI: 10.1051/0004-6361:20020320