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A comment on What happens when children don’t have the internet for a whole day. Parent comment
https://www.amazon.com/Ekaterina-Murashova/e/B00MWS9SN8
http://www.samokatbook.ru/files/Samokat_catalogue2008.pdf
Edit: Seems like you are questioning if the author actually carried out the experiment that she claimed. In that case there is indeed no proof or cross-reference available.
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https://www.amazon.com/Ekaterina-Murashova/e/B00MWS9SN8
http://www.samokatbook.ru/files/Samokat_catalogue2008.pdf
Edit: Seems like you are questioning if the author actually carried out the experiment that she claimed. In that case there is indeed no proof or cross-reference available.