1. Survey of Temporal Information Retrieval and Related Applications
2. Matthew Honnibal and Ines Montani. [n.d.]. Spacy: Industrial-Strength Natural Language Processing version 2.1.8 https://spacy.io/ accessed 17. March 2020. Matthew Honnibal and Ines Montani. [n.d.]. Spacy: Industrial-Strength Natural Language Processing version 2.1.8 https://spacy.io/ accessed 17. March 2020.
3. Survey of Temporal Information Extraction;Lim Chae-Gyun;JIPS,2019