# Subgroup structure of orthogonal groups of small dimension over finite fields

How much is known about the subgroup structure of the orthogonal groups (of dimension n<=7, say) over finite fields? Can anyone point me in the direction of a good reference? I'm aware of a book by Liebeck and Kleidman but I think this mostly deals with the maximal subgroups (please correct me if I'm wrong) and I'd like to know about the other subgroups (if possible).

Thank you.

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Did you see this: page.mi.fu-berlin.de/baumeist/sommerschule/asch1.pdf ? –  Mark Sapir Jul 12 '13 at 0:06