User manual for UMSDOS

Article describing how this patent was overturned in Germany in 2007.

Article that was published at least 4 months before the first patent application, however this was considered by the examiner in the reexamination.

Article that identified the problem of different operating systems having different filename limitations. Proposed a mapping solution for this problem.

Article that anticipates long filenames, having multiple directory entries for a single file, and having directory access routines to provide a consistent interface to both old and new file systems.