https://www.maths.tcd.ie/~lebed/Galperin.%20Playing%20pool%20with%20pi.pdf

原文还是不复制了罢(毕竟人家的论文是有版权的)

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  • Miki_Sayaka
    Admin Author

    标题全文应该是《Playing Pool With π (The Number π from a billiard point of view)》