. . . . "2006-02-18Z"^^ . . . "2006Z"^^ . . "1918-03-01Z"^^ . . "Turkishchemical engineer" . "Sabri Ergun (1 March 1918 \u2013 18 February 2006) was a Turkish chemical engineer. He is known for the Ergun equation, which expresses the pressure drop across a packed bed."@en . "Sabri Ergun"@en . "Ergun, Sabri"@en . . "1918Z"^^ . .