Bos, Henk J. M. (2001). "The legitimation of geometrical procedures before 1590". Redefining Geometrical Exactness: Descartes' Transformation of the Early Modern Concept of Construction. Sources and Studies in the History of Mathematics and Physical Sciences. New York: Springer. ss. 23-36. doi:10.1007/978-1-4613-0087-8_2. MR1800805.
Więsław, Witold (2001). "Squaring the circle in XVI–XVIII centuries". Fuchs, Eduard (Ed.). Mathematics throughout the ages. Including papers from the 10th and 11th Novembertagung on the History of Mathematics held in Holbæk, October 28–31, 1999 and in Brno, November 2–5, 2000. Dějiny Matematiky/History of Mathematics. 17. Prag: Prometheus. ss. 7-20. MR1872936.
Abeles, Francine F. (1993). "Charles L. Dodgson's geometric approach to arctangent relations for pi". Historia Mathematica. 20 (2). ss. 151-159. doi:10.1006/hmat.1993.1013. MR1221681.
Tubbs, Robert (Aralık 2020). "Squaring the circle: A literary history". Tubbs, Robert; Jenkins, Alice; Engelhardt, Nina (Ed.). The Palgrave Handbook of Literature and Mathematics. Springer International Publishing. ss. 169-185. doi:10.1007/978-3-030-55478-1_10. MR4272388.
Więsław, Witold (2001). "Squaring the circle in XVI–XVIII centuries". Fuchs, Eduard (Ed.). Mathematics throughout the ages. Including papers from the 10th and 11th Novembertagung on the History of Mathematics held in Holbæk, October 28–31, 1999 and in Brno, November 2–5, 2000. Dějiny Matematiky/History of Mathematics. 17. Prag: Prometheus. ss. 7-20. MR1872936.
Bos, Henk J. M. (2001). "The legitimation of geometrical procedures before 1590". Redefining Geometrical Exactness: Descartes' Transformation of the Early Modern Concept of Construction. Sources and Studies in the History of Mathematics and Physical Sciences. New York: Springer. ss. 23-36. doi:10.1007/978-1-4613-0087-8_2. MR1800805.
Crippa, Davide (2019). "James Gregory and the impossibility of squaring the central conic sections". The Impossibility of Squaring the Circle in the 17th Century. Springer International Publishing. ss. 35-91. doi:10.1007/978-3-030-01638-8_2.
Abeles, Francine F. (1993). "Charles L. Dodgson's geometric approach to arctangent relations for pi". Historia Mathematica. 20 (2). ss. 151-159. doi:10.1006/hmat.1993.1013. MR1221681.
Tubbs, Robert (Aralık 2020). "Squaring the circle: A literary history". Tubbs, Robert; Jenkins, Alice; Engelhardt, Nina (Ed.). The Palgrave Handbook of Literature and Mathematics. Springer International Publishing. ss. 169-185. doi:10.1007/978-3-030-55478-1_10. MR4272388.