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O(\alpha) QED radiative corrections to neutral current deep inelasticproduction of heavy quarks are calculated in the leading log approximation andcompared with the corresponding corrections assuming a massless charm parton.Besides the inclusive case, corrections to the semi-inclusive d^3\sigma/dx dydz and the effect of z-cuts are studied. In the latter case, the masslesscorrections differ from the correct massive radiative corrections to deepinelastic heavy quark production by about 40%-10% for 0.2\lesssim z \lesssim0.5.Comment: minor changes, revised version to appear in Z Phys. C, 25 pages,  LaTeX, 13 figures, epsfig.st

Leading log radiative corrections to deep inelastic production of heavy quarks