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HYPOELLIPSE earthquake location program: manual, source and executables for UNIX and DOS.

To easily obtain the entire HYPOELLIPSE distribution, you may wish to download and expand the file:

Table of contents for HYPOELLIPSE.

Description of the weighted regression and quality estimation used in HYPOELLIPSE.USGS
 Open-File Report 84-766 (This is a 20MB pdf file.)

(This program archive may also be found here: )