If you refer to our source code. Please cite it.

Kun Lei, Peng Guo, Yi Wang, Xiao Wu, Wenchao Zhao. Solve routing problems with a residual edge-graph attention neural network. Neurocomputing.2022.
https://arxiv.org/abs/2105.02730

NEEDED:
torch                     1.4.0
torch-geometric    1.5.0
torch-cluster         1.5.2
torch-scatter         2.0.3
torch-sparse          0.6.0
torch-spline-conv  1.2.0