哪位大侠可知“如何获取贝尔实验室的经济学讨论稿”，小可欲找如下一篇文献：J. Panzar and R. Willig, "Economies of Scale and Economies of Scope in Multi-Output Production," econ. disc. paper no. 33, Bell Laboratories 1975。请指点迷津，非常感谢！

如哪位大侠有这篇文献，还请不吝赐予，小可邮箱：qlzhurd@hotmail.com 感谢先！