The orbital period of intermediate polar 1WGA J1958.2+3232 S. V. Zharikov, G. H. Tovmassian, J. Echevarría and A. A. Cárdenas A&A, 366 3 (2001) 834-839 Published online: 15 February 2001 DOI: 10.1051/0004-6361:20000111