Changqing Xu, Ren Ding. The Number of Isosceles Right Triangles Determined by n Points in Convex Position in the Plane. Discrete & Computational Geometry, 31(3):491-499, 2004. [doi]
@article{XuD04:3,
title = {The Number of Isosceles Right Triangles Determined by n Points in Convex Position in the Plane},
author = {Changqing Xu and Ren Ding},
year = {2004},
doi = {10.1007/s00454-003-0816-5},
url = {http://dx.doi.org/10.1007/s00454-003-0816-5},
researchr = {https://researchr.org/publication/XuD04%3A3},
cites = {0},
citedby = {0},
journal = {Discrete & Computational Geometry},
volume = {31},
number = {3},
pages = {491-499},
}