研究开发要素说(Theory of factors of research and development)以格鲁伯(W.Gruber)、梅尔塔(D.Meita)和维农(R.Vernon)为代表的另一部分经济学家们是将所谓“研究与开发要素”(Research and Development F ...
需求相似理论(Theory of Preference Similarity)需求相似理论又称偏好相似理论(preference similarity theory)或重叠需求理论(overlapping demand theory),是瑞典经济学家斯戴芬·伯伦斯坦·林德(Staffan B. ...