Systematic Literature Review (SLR) is a popular research method with adoption across different research domains that is used to draw generalizations, compose multiple existing concepts into a new one, or identify conflicts and gaps in existing research. Within the Information Technology domain, researchers face multiple challenges during the search step of an SLR which are caused by the use of different query languages by digital libraries. This thesis proposes tool support that provides cross-library search by using a common query language across digital libraries. For this the existing digital library APIs and query languages have been analyzed and a new cross-library query language and transformation was developed that allows the formulation of cross-library queries that can be transformed into existing query languages. These concepts have been integrated within an existing reference management tool to provide integrated and automated cross-library search and result management to address the challenges faced by Information Technology researchers during the search step.