Bowser, Edward Albert (1882), "The reciprocal or hyperbolic spiral", An Elementary Treatise on Analytic Geometry: Embracing Plane Geometry and an Introduction to Geometry of Three Dimensions (4th ed.), D. Van Nostrand, p. 232
Ganguli, Surendramohan (1926), "289: The hyperbolic spiral", The Theory of Plane Curves, vol. II (2nd ed.), University of Calcutta, pp. 364–365
Cotesium, Rogerum (1722), Smith, Robertus (ed.), Harmonia Mensurarum, Sive Analysis & Synthesis per Rationum & Angulorum Mensuras (in Latin), Cambridge. For the Cotes spirals, see pp. 30–35; the hyperbolic spiral is case 4, p. 34. Hammer dates this material to 1714, but it was not published until after Cotes's death.
Dunham, Douglas (2003), "Hyperbolic spirals and spiral patterns", in Barrallo, Javier; Friedman, Nathaniel; Maldonado, Juan Antonio; Martínez-Aroza, José; Sarhangi, Reza; Séquin, Carlo (eds.), Meeting Alhambra, ISAMA-BRIDGES Conference Proceedings, Granada, Spain: University of Granada, pp. 521–528, ISBN84-930669-1-5
Drábek, Karel (1994), "Plane curves and constructions", in Rektorys, Karel (ed.), Survey of Applicable Mathematics, Mathematics and Its Applications, vol. 280–281, Springer Netherlands, pp. 112–166, doi:10.1007/978-94-015-8308-4_4, ISBN9789401583084; see p. 138
Hammer, Øyvind (2016), "15: The case of the staircase", The Perfect Shape: Spiral Stories, Springer International Publishing, pp. 65–68, doi:10.1007/978-3-319-47373-4_15
Guicciardini, Niccolò (1995), "Johann Bernoulli, John Keill and the inverse problem of central forces", Annals of Science, 52 (6): 537–575, doi:10.1080/00033799500200401
Polezhaev, Andrey (2019), "Spirals, their types and peculiarities", in Tsuji, Kinko; Müller, Stefan C. (eds.), Spirals and Vortices: In Culture, Nature, and Science, The Frontiers Collection, Springer International Publishing, pp. 91–112, doi:10.1007/978-3-030-05798-5_4, ISBN9783030057985, S2CID150149152; see especially Section 2.2, Hyperbolic spiral, p. 96
Kepr, Bořivoj (1994), "Differential geometry", in Rektorys, Karel (ed.), Survey of Applicable Mathematics, Mathematics and Its Applications, vol. 280–281, Springer Netherlands, pp. 260–335, doi:10.1007/978-94-015-8308-4_9, ISBN9789401583084. For an equivalent formula for the direction angle (the complementary angle to the pitch angle) see Section 9.9, Theorem 1, p. 300
Polezhaev, Andrey (2019), "Spirals, their types and peculiarities", in Tsuji, Kinko; Müller, Stefan C. (eds.), Spirals and Vortices: In Culture, Nature, and Science, The Frontiers Collection, Springer International Publishing, pp. 91–112, doi:10.1007/978-3-030-05798-5_4, ISBN9783030057985, S2CID150149152; see especially Section 2.2, Hyperbolic spiral, p. 96