Because this is a proprietary networking device, there is no academic "paper" on the firmware in the traditional sense (like a university research paper). However, there is extensive technical documentation, forum discussions, and reverse-engineering guides within the networking community.
Never attempt to upload firmware over Wi-Fi. A slight signal dip can corrupt the transfer. Troubleshooting Performance Without Flashing
The HG6145D2 firmware supports several advanced networking capabilities: Dual-Band Management