Journal Article Two-Point Step Size Gradient Methods Get access JONATHAN BARZILAI, JONATHAN BARZILAI School of Business Administration, Dalhousie UniversityHalifax, N.S., Canada Search for other works by this author on: Oxford Academic Google Scholar JONATHAN M. BORWEIN JONATHAN M. BORWEIN Department of Mathematics, Statistics and Computing Science, Dalhousie UniversityHalifax, N.S., Canada Search for other works by this author on: Oxford Academic Google Scholar IMA Journal of Numerical Analysis, Volume 8, Issue 1, January 1988, Pages 141–148, https://doi.org/10.1093/imanum/8.1.141 Published: 01 January 1988 Article history Received: 24 September 1986 Revision received: 14 April 1987 Published: 01 January 1988