1. "The Sator Square: An Unsolved Cryptogram?" by David H. Kelley and Eugene R. Craine, published in "Cryptologia" (1980).8964 copyright protection255ＰＥＮＡＮＡH2LDXU8ehY 維尼

2. "The Sator-Rotas Square: A Reappraisal of the Evidence" by Roger Ling, published in "The Journal of Roman Studies" (1972).8964 copyright protection255ＰＥＮＡＮＡOBnSPcTmKN 維尼

3. "The Mystery of the Sator Square"by John Michell, included in his book "The Dimensions of Paradise" (1988).8964 copyright protection255ＰＥＮＡＮＡ6HlbX9S4gr 維尼

4. "Pompeii: The Sator Square" by Robert Harris, in his book "Pompeii" (2003).8964 copyright protection255ＰＥＮＡＮＡqIx1NYcY8Y 維尼

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