Depending on the NetSim version you are using, please click the appropriate link.
For v13.2: https://www.tetcos.com/pdf/v13.2/Primary_User_Emulation_(PUE)_Attack_v13.2.pdf
For v13.1: https://www.tetcos.com/pdf/v13.1/Primary_User_Emulation_(PUE)_Attack_v13.1.pdf
For v13.0: Primary_User_Emulation_(PUE)_Attack_v13.0.pdf (tetcos.com)
For v12.1 and v12.2:Primary_User_Emulation_(PUE)_Attack_v12.1.pdf (tetcos.com)