This is a guide to the software package AUTO for continuation and bifurcation problems in ordinary differential equations. Earlier versions of AUTO were described in Do:81 Do:81, DoKe:86 DoKe:86, DoWa:95a DoWa:95a, WaDo:95b WaDo:95b. For a description of the basic algorithms see DoKeKe:91a DoKeKe:91a, DoKeKe:91b DoKeKe:91b. This version of AUTO incorporates the HomCont algorithms of ChKu:94 ChKu:94, ChKuSa:95 ChKuSa:95 for the bifurcation analysis of homoclinic orbits. The graphical user interface was written by XJW:94 XJW:94. The Floquet multiplier algorithms were written by Fa:94 Fa:94, FaJe:91 FaJe:91.
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