Legal professionals normally turn to traditional law sources for literature on trade secrets. Librarians know that trade secrets are interdisciplinary and look in non legal databases covering business, science, economics and more. Here is a recent example of an article that is indexed in the Social Science Search

Managing intellectual property in R&D alliances
38 INTERNATIONAL JOURNAL OF TECHNOLOGY MANAGEMENT 160 (2007)

This paper deals with the management of Intellectual Property (IP) in R&D alliances, with a focus on two key IP types - patents and trade secrets. Since IP is both inputs to and outputs of R&D alliances, the key is to simultaneously achieve two objectives - IP protection and IP generation. As research inputs, IP could be devalued by partners' opportunistic learning. Thus, IP needs to be carefully selected and protected through mechanisms such as equity arrangement, non-disclosure and non-compete agreements, and monitoring and auditing.