Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleLetter to the editor.AuthorsHunger, H.-J.; Rogaschewski, S.PublicationScanning, 1987, Vol 9, Issue 6, p263ISSN0161-0457Publication typeArticleDOI10.1002/sca.4950090608