His Local jet bundle formulation of Bäcklund transformations, 1979: t.p. (F.A.E. Pirani; Dept. of Math., King's Coll., London) CIP data sheet (Pirani, Felix Arnold Edward; b. 2/2/28)

Russell, B. The ABC of relativity, 1959, c1958: t.p. (Felix Pirani)

His Abigail at the beach, c1988: CIP t.p. (Felix Pirani) galley (British)

Telegraph WWW site, viewed Feb. 11, 2016 (Felix Pirani, born Felix Arnold Edward Pirani, February 2 1928, in Britain; died December 31 2015; mathematical physicist whose research into Einstein's theory of relativity included outstanding work on gravitational waves; he was also a populariser, an author of fiction for children, a political activist, and, in retirement, a sculptor and mosaicist; evacuated to Canada during the Second World War; after taking degrees at the University of Western Ontario and the University of Toronto and a DSc at the Carnegie Institute of Technology, he took his PhD in Physics at Cambridge University in 1956; appointed to a lectureship at King's College London, where he spent the key part of his career as a mathematical physicist; wrote several books for children featuring a character called Abigail; latterly, he turned to sculpting and mosaics, with typically startling accomplishment)