Discovery of spectral variation in the optical counterpart of IRAS 01005+7910 V. G. Klochkova, M. V. Yushkin, A. S. Miroshnichenko, V. E. Panchuk and K. S. Bjorkman A&A, 392 1 (2002) 143-150 Published online: 22 August 2002 DOI: 10.1051/0004-6361:20020909