All images came from Pixaby.com

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Yuri_B, P. (2015, September 28). Background Blurry Template. Retrieved from https://pixabay.com/illustrations/background-blurry-template-pattern-1696064/

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Fajarbudi86, P. (2015, September 15). Watercolor Blue. Retrieved from https://pixabay.com/illustrations/watercolor-blue-939784/

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Geralt, P. (2019, August 7). Artificial Intelligence Brain. Retrieved from https://pixabay.com/illustrations/artificial-intelligence-brain-think-4389372/

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Geralt, P. (n.d.). Artificial Intelligence Brain. Retrieved September 19, 2018, from https://pixabay.com/illustrations/artificial-intelligence-brain-think-3685928/

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Geralt, P. (2017, September 20). Bulletin Board Stickies Post-It. Retrieved from https://pixabay.com/illustrations/bulletin-board-stickies-post-it-2768204/

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Geralt, P. (2017, September 3). Head Skull Blow. Retrieved from https://pixabay.com/photos/head-skull-blow-resolution-resolve-2709732/

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