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- [3] EUROPEAN ETHYLENE PRODUCTION TO FALL IN Q4 [J]. EUROPEAN CHEMICAL NEWS, 1995, 64 (1689): : 11 - 11
- [6] Move to lift Q4 prices in bid to reverse slide [J]. EUROPEAN CHEMICAL NEWS, 1996, 66 (1734): : 11 - 11
- [8] ACN - Propylene fall leads to low Q4 contracts [J]. EUROPEAN CHEMICAL NEWS, 1997, 68 (1790): : 11 - 11
- [9] A modified Q4/Q4 element for topology optimization [J]. Structural and Multidisciplinary Optimization, 2009, 37 : 255 - 264