1. 2020. Google quietly reached a major milestone in its battle with Microsoft to rule the workplace. https://www.businessinsider.com/google-g-suite-gmail-2-billion-vs-microsoft-office-2020-3 Retrieved September 6, 2021 . 2020. Google quietly reached a major milestone in its battle with Microsoft to rule the workplace. https://www.businessinsider.com/google-g-suite-gmail-2-billion-vs-microsoft-office-2020-3 Retrieved September 6, 2021.
2. Ádám Csapó and György Wersényi . 2013. Overview of Auditory Representations in Human-machine Interfaces. ACM Computing Surveys (CSUR) 46, 2 , Article 19 (December 2013 ), 23 pages. https://doi.org/10.1145/2543581.2543586 Ádám Csapó and György Wersényi. 2013. Overview of Auditory Representations in Human-machine Interfaces. ACM Computing Surveys (CSUR) 46, 2, Article 19 (December 2013), 23 pages. https://doi.org/10.1145/2543581.2543586
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