On Brahmagupta's and Kummer's quadrilaterals
K.R. Nagarajan
Chennai Mathematical Institute, IndiaR. Sridharan
Chennai Mathematical Institute, India

Cite this article
K.R. Nagarajan, R. Sridharan, On Brahmagupta's and Kummer's quadrilaterals. Elem. Math. 61 (2006), no. 2, pp. 45–57
DOI 10.4171/EM/32