Use the generic community credentials (often : genesis / Password : upload ).
This paper delineates the architecture of this shadow archive. It moves beyond the moral binary of "piracy versus theft" to analyze the technical robustness of the LibGen/RusEC network, the philosophy of "knowledge communism" (referencing Robert Merton), and the ongoing "whack-a-mole" legal battles that have failed to shut down the "full" availability of these texts. libgenrusec full
If you have a book that isn't available, you can upload it to help the community: Use the generic community credentials (often : genesis