uvby–H CCD photometry of NGC 1817 and NGC 1807L. Balaguer-Núñez, C. Jordi, D. Galadí-Enríquez and E. MasanaA&A, 426 3 (2004) 827-834DOI: https://doi.org/10.1051/0004-6361:20041333
CCD photometry of NGC 1817 and NGC 1807 CCD photometry of NGC 1817 and NGC 1807