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- [1] On 'On the frequency of Friday the thirteenth': Henry Ricardo writes MATHEMATICAL GAZETTE, 2021, 105 (564): : 550 - 550
- [6] Inequality of Integrals Solution by Henry Ricardo, Tappan, NY AMERICAN MATHEMATICAL MONTHLY, 2017, 124 (10): : 973 - 974
- [8] Who writes the History of Education? Jose Ricardo Pires de Almeida and the place of the narrative CADERNOS DE HISTORIA, 2018, 19 (31): : 163 - 177