Hayashr, T. (1911) “On the Impossibility of the Indeterminate Equation X<sup>n</sup>+Y<sup>n</sup>=nZ<sup>n</sup>, in which <sup>n</sup>is an Odd Prime Integer”, The Journal of the Indian Mathematical Society, 3(1), pp. 16–22. doi: 10.18311/jims/1911/17823.