Helpman

常见例句

Grossman,Gene M.and Elhanan helpman,1991,Innovation and Growth in the Global Economy,Cambridge,MA:MIT Press.
张宇;孟捷;卢荻主编.;高级政治经济学
Political economics also starts from individual decision making. See Persson and Tabellini (2000), Helpman and Grossman (2001).
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Grossman and Helpman, in particular, model producers as contributing financially to incumbent politicians in return for their providing or maintaining tariff protection.
特别是在格罗斯曼与赫尔普曼设立的模型中，生产者资助了当权政客，以换取关税保护的实行或维护。