**DIPS 1/97**[tex source, PostScript, dvi]-
**Title:**Contact classification of 3-order linear ODEs**Author:**Valeriy A. YUMAGUZHINA local classification of regular 3-order linear ordinary differential equations with respect to contact transformations is given.

This preprint is extended version of a paper published in Journal of Differential Geometry and Its Applications Vol. 6, No. 4, pp. 343-350, 1996.

20 pages. AmS-TeX. To compile source files (

**.tex**) one needs the title page style files titams.tex.