torch.nn.modules.activation - PyTorch Documentation, PyTorch Contributors, 2024 (PyTorch Foundation) - Official documentation for PyTorch's non-linear activation modules, detailing usage for nn.Module classes and linking to torch.nn.functional equivalents.
Keras API Reference: Layers | TensorFlow, TensorFlow Authors, 2023 - Official documentation for Keras layers, including various activation layers like ReLU and the general Activation layer, and how to specify activations in Dense layers.
Deep Learning, Ian Goodfellow, Yoshua Bengio, and Aaron Courville, 2016 (MIT Press) - A foundational textbook providing a comprehensive theoretical background on neural networks, including detailed explanations of various activation functions and their mathematical properties.
Deep Learning with PyTorch, Eli Stevens, Luca Antiga, and Thomas Viehmann, 2020 (Manning Publications) - A practical guide to implementing deep learning models using PyTorch, offering insights into how activation functions are applied within the PyTorch framework.