Bibliography (4):

1. https://dl.acm.org/doi/abs/10.1145/322003.322015

2. https://dl.acm.org/doi/pdf/10.1145/3618260.3649664

3. Catalytic Approaches to the Tree Evaluation Problem

4. Wikipedia Bibliography:

   1. https://en.wikipedia.org/wiki/Multitape_Turing_machine  :

      https://en.wikipedia.org/wiki/Multitape_Turing_machine