Solved by ptrblck in post #5 
              
              
                If this model is taken from another research paper, I would expect a definition of the “ResNet Block”, but my best guess would be e.g.: 
model = models.resnet18()
print(model.layer1)
> Sequential(
  (0): BasicBlock(
    (conv1): Conv2d(64, 64, kernel_size=(3, 3), stride=(1, 1), padding=(1, 1), bias=…