Bibliography (7):

1. https://research.google/blog/a-fast-wordpiece-tokenization-system/

2. BERT: Pre-training of Deep Bidirectional Transformers for Language Understanding

3. https://github.com/huggingface/tokenizers

4. https://www.tensorflow.org/text/guide/subwords_tokenizer

5. Wikipedia Bibliography:

   1. Lexical analysis § Tokenization  :

      https://en.wikipedia.org/wiki/Lexical_analysis#Tokenization

   2. https://en.wikipedia.org/wiki/Aho%E2%80%93Corasick_algorithm  :

      https://en.wikipedia.org/wiki/Aho%E2%80%93Corasick_algorithm

   3. Trie