While there isn't a single "official" academic paper for the Drakengard series, it is frequently the subject of deep-dive critical essays and narrative analyses due to its transgressive themes and its role as the foundation for the NieR franchise.
The most comprehensive "proper" analysis often comes from director Yoko Taro himself through his where he deconstructs his philosophy of creating narratives based on "backward thinking". Key Analytical Works Drakengard
Most "papers" or essays on the series focus on these three core pillars: While there isn't a single "official" academic paper