Bibliography (7):

1. Playing Atari with Deep Reinforcement Learning

2. R2D2: Recurrent Experience Replay in Distributed Reinforcement Learning

3. DeepMind Lab

4. Recurrent Model-Free RL is a Strong Baseline for Many POMDPs

5. Wikipedia Bibliography:

   1. Recurrent neural network

   2. Long short-term memory

   3. Reinforcement learning