abaqus euler contact

Dear friends,

I am modeling contact problem with CEL method, which involves 2 kinds of materials (euler-to-euler contact) in euler domain and 3rd material in lagrangian (euler-to-lagrangian contact) domain. The modeling of contact between the euler and lagrangian is okay.

But the modeling of interaction of euler-to-euler contact seems to be lack of information in ABAQUS Documentation.

Does anyone know, how to set up the interaction property of euler-to-euler contact?