There is no specefic document i have seen for H3C. Please find the following link h3c.com-dot1x
which details the dot1x configuration for dot1x in the switch.
Juniper NAC is based on dot1x and most of the vendor support majority of the dot1x commands. THe most important is the guest-vlan command and auth-fail vlan command. Some time you will have challenges to find timers command;
Hope it clarifies; Let us know if you want any other details.
All the best;