= The Spherical Case of the Tūsī Couple by George Saliba and E. S. Kennedy
{c}
{tag=Work by George Saliba}
{tag=Work by Edward Stewart Kennedy}
{title2=1991}
{title2=10.1017/S095742390000151X}
https://www.cambridge.org/core/journals/arabic-sciences-and-philosophy/article/abs/spherical-case-of-the-tusi-couple/6CCCCA0CA68881F3E9EAB1F5A679E957
Original historical research, Arabic Sciences and Philosophy 1(2), pp. 285–291. The 2008 online publication date must not replace the 1991 issue date. The abstract distinguishes plane and spherical applications; access to the full article may require a subscription.
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