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Get free text of research papers as you browse, using Unpaywall's index of ten million legal, open-access articles.

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When you encounter a paywalled article, a colored tab gives you a link to a free PDF, if we can find one in our index of 10M+ open-access articles.
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When you view a paywalled scholarly article, Unpaywall automatically checks its open database of 16 million legal, open-access articles. If there's an open version somewhere, you'll see a green tab on the article. Click the tab and read for free, legally!

Unpaywall is a free, open-source project from Our Research, a nonprofit dedicated to making scholarly research more open, accessible, and reusable.
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Permissions and data๋” ์•Œ์•„๋ณด๊ธฐ

ํ•„์š”ํ•œ ๊ถŒํ•œ:

  • ๋ชจ๋“  ์›น์‚ฌ์ดํŠธ์—์„œ ์‚ฌ์šฉ์ž์˜ ๋ฐ์ดํ„ฐ์— ์ ‘๊ทผ
์ถ”๊ฐ€ ์ •๋ณด
๋ถ€๊ฐ€ ๊ธฐ๋Šฅ ๋งํฌ
๋ฒ„์ „
3.98
ํฌ๊ธฐ
675.66 KB
๋งˆ์ง€๋ง‰ ์—…๋ฐ์ดํŠธ
4๋…„ ์ „ (2021๋…„ 7์›” 28์ผ)
๊ด€๋ จ ์นดํ…Œ๊ณ ๋ฆฌ
๋ผ์ด์„ ์Šค
MIT ๋ผ์ด์„ ์Šค
๊ฐœ์ธ์ •๋ณด์ฒ˜๋ฆฌ๋ฐฉ์นจ
์ด ๋ถ€๊ฐ€ ๊ธฐ๋Šฅ์— ๋Œ€ํ•œ ๊ฐœ์ธ์ •๋ณด์ฒ˜๋ฆฌ๋ฐฉ์นจ ์ฝ๊ธฐ
๋ฒ„์ „ ๋ชฉ๋ก
ํƒœ๊ทธ
๋ชจ์Œ์ง‘์— ์ถ”๊ฐ€
์ด ๋ถ€๊ฐ€ ๊ธฐ๋Šฅ ์‹ ๊ณ 
๋ฒ„์ „ 3.98์˜ ์ถœ์‹œ ์ •๋ณด
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