Giommi, PaoloPaoloGiommiValentini, GiovanniGiovanniValentiniMassaro, E.E.MassaroPerri, M.M.Perri2020-09-172020-09-172003-02-01https://hdl.handle.net/20.500.13025/1405MS 1458+22X-rays: galaxiesgalaxies: activegalaxies: individual: OJ 287techniques: photometryOptical and X-ray observations of the two BL Lac objects OJ 287 and MS 1458+22Article Journalhttp://www.dta.it/images/files/works/articles/OpticalandX-rayobservationsofthetwoBLLacobjectsOJ287andMS1458+22.pdfhttp://adsabs.harvard.edu/abs/2003A&A...399...33M54dcce088580fe1368eeb06c