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Consumer Willingness to Pay for Vehicle Attributes: What Do We Know?
Transp Res Part A Policy Pract. 2018 Dec;118:258-279. doi: 10.1016/j.tra.2018.09.013.
Transp Res Part A Policy Pract. 2018.
PMID: 30505075
Free PMC article.
Re-Searching for Hidden Costs: Evidence from the Adoption of Fuel-Saving Technologies in Light-Duty Vehicles.
Huang HH, Helfand G, Bolon K, Beach R, Sha M, Smith A.
Huang HH, et al. Among authors: helfand g.
Transp Res D Transp Environ. 2018 Dec;65:194-212. doi: 10.1016/j.trd.2018.08.009.
Transp Res D Transp Environ. 2018.
PMID: 30505207
Free PMC article.
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Simpler is better: Predicting consumer vehicle purchases in the short run.
Doremus J, Helfand G, Liu C, Donahue M, Kahan A, Shelby M.
Doremus J, et al. Among authors: helfand g.
Energy Policy. 2019 Jun;129:1404-1415. doi: 10.1016/j.enpol.2019.02.051.
Energy Policy. 2019.
PMID: 31409938
Free PMC article.
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Meeting report: Estimating the benefits of reducing hazardous air pollutants--summary of 2009 workshop and future considerations.
Gwinn MR, Craig J, Axelrad DA, Cook R, Dockins C, Fann N, Fegley R, Guinnup DE, Helfand G, Hubbell B, Mazur SL, Palma T, Smith RL, Vandenberg J, Sonawane B.
Gwinn MR, et al. Among authors: helfand g.
Environ Health Perspect. 2011 Jan;119(1):125-30. doi: 10.1289/ehp.1002468. Epub 2010 Oct 4.
Environ Health Perspect. 2011.
PMID: 20920952
Free PMC article.
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Phenylalanine hydroxylase from human kidney.
Ayling JE, Helfand GD, Pirson WD.
Ayling JE, et al. Among authors: helfand gd.
Enzyme. 1975;20(1):6-19. doi: 10.1159/000458915.
Enzyme. 1975.
PMID: 1126332
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Inhibition of phenylalanine hydroxylase by p-chlorophenylalanine; dependence on cofactor structure.
Ayling JE, Helfand GD.
Ayling JE, et al. Among authors: helfand gd.
Biochem Biophys Res Commun. 1974 Nov 6;61(1):360-6. doi: 10.1016/0006-291x(74)90575-0.
Biochem Biophys Res Commun. 1974.
PMID: 4280309
No abstract available.
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Kidney phenylalanine hydroxylase from man and rat. Comparison with the liver enzyme.
Ayling JE, Pirson WD, al-Janabi JM, Helfand GD.
Ayling JE, et al. Among authors: helfand gd.
Biochemistry. 1974 Jan 1;13(1):78-85. doi: 10.1021/bi00698a013.
Biochemistry. 1974.
PMID: 4808705
No abstract available.
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