A. K. Austin, R. J. Webster: 3147. A Note on Pythagoras’ Theorem. In: The Mathematical Gazette, Band 50, Nr. 372, 1966, S.171, doi:10.2307/3611958. JSTOR:3611958.
A. K. Austin, R. J. Webster: 3147. A Note on Pythagoras’ Theorem. In: The Mathematical Gazette, Band 50, Nr. 372, 1966, S.171, doi:10.2307/3611958. JSTOR:3611958.