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On bookshelf up to 2023Oberwolfach Reports (2004-) P. 1122
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Online Journal of Analytic Combinatorics (2006-2022)
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Open Applied Mathematics Journal (2007-2013)
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Open Journal of Discrete Mathematics (2011-)
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Open Journal of Mathematical Optimization (2020-2022)
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Open Journal of Mathematical Optimization (2020-2023)
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Open Journal of Statistics (2011-)
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Open Mathematics (2003-)
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Open Mathematics Journal (2008-2015)
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Open Mathematics, Statistics and Probability Journal (2009-2020)
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Open Numerical Methods Journal (2009-2012)
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Operational Research (2001-)
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Operations Management Research (2008-)
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On bookshelf up to 2012Operations Research (partial access from 1952-) P. 544
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Operations Research and Fuzziology (2011-)
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Operations Research Letters (1995-)
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On bookshelf up to 2010Operators and Matrices (2007-) P. 1278
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Optimization (1997-) P. 695
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Optimization and Engineering (2000-)
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Optimization Letters (2007-)
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Optimization Methods and Software (1997-2023)
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On bookshelf up to 1995Optimization. A Journal of Math. Programming and Operations Research (2001-2023) P. 695
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Opuscula Mathematica (2004-) P. 1161
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OR Spectrum (1979-)
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On bookshelf up to 2011Order (1984-) P. 895
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Osaka Journal of Mathematics (1949-2024)