Tong, Haoyang, et al. “CoGrad3D: Spatially-Coupled Timestep Optimization With Orthogonal Gradient Fusion for 3D Generation”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 40, no. 12, Mar. 2026, pp. 9539-47, doi:10.1609/aaai.v40i12.37915.