Banerjee, Sudipto (2004), Revisiting Spherical Trigonometry with Orthogonal Projectors, The College Mathematics Journal, Mathematical Association of America, 35 (5): 375—381, doi:10.1080/07468342.2004.11922099, S2CID122277398Text online
researchgate.net
Banerjee, Sudipto (2004), Revisiting Spherical Trigonometry with Orthogonal Projectors, The College Mathematics Journal, Mathematical Association of America, 35 (5): 375—381, doi:10.1080/07468342.2004.11922099, S2CID122277398Text online
semanticscholar.org
api.semanticscholar.org
Banerjee, Sudipto (2004), Revisiting Spherical Trigonometry with Orthogonal Projectors, The College Mathematics Journal, Mathematical Association of America, 35 (5): 375—381, doi:10.1080/07468342.2004.11922099, S2CID122277398Text online