References
Coolidge,A Treatise on the Circle and the Sphere, pp. 161,157, 159.
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(Communicated by Prof. B. S. Madhava Rao,f.a.sc.)
Read at the meeting of the Mathematical Society of the Panjab University, held on the 16th March 1942, in continuation of the paper published by the author in theProc. Ind. Acad. Sci., Bangalore, 1942,15A, No. 1.
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Mandan, S.R. Umbilical projection. Proc. Indian Acad. Sci. (Math. Sci.) 24, 433 (1946). https://doi.org/10.1007/BF03171379
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DOI: https://doi.org/10.1007/BF03171379