Prime extension field encoding ASN.1

ASN.1 encoding for elliptic curve cryptography is recommended by Certicom, as explained at a related question, covering curves over prime fields and binary extension fields.

I'm looking for known recommendations for encoding curves defined over prime extension fields that are suitable for pairing. At best, generally acceptable ASN.1 modules for target group elements, and $\mathbb G_1$ and $\mathbb G_2$ elements (points on curves over base prime field and over extension).