Further peer-reviewed references as well as websites are added using a backward snowball method (pursuing references of references) [ 17].
This included; brain-storming within the review team, browsing through specialist educational library collections, discussions with fellow educators and pursuing references of references [ 20].
Additionally, we used this systematic review [ 17] as the basis for snowballing techniques, i.e. pursuing references of references [ 24] to identify other potentially relevant systematic reviews of QATs.
2. Snowballing both backwards (pursuing references of references) and forwards (using citation-tracking software to identify subsequent publications citing the index paper) from seminal theoretical/methodological publications and empirical examples of realist and meta-narrative reviews.
We asked our steering group members and searched electronic databases (Medline, Social Science Citation Index and Google Scholar for academic sources and government websites for policy sources) for 'telehealth', 'telecare'assistedted living technologies' and 'assistive technologies', then pursued reference lists and hyperlinks.
A related point can be made when people assert that economic structures and policy should be left to economists, or when people assert that economic policy can be pursued without reference to distributive justice.
But Sharron Angle, a Tea Party-backed candidate for the Senate who was widely criticised for saying voters could pursue "second amendment remedies" – a reference to the right to carry guns – if they are unhappy with the political process, has defended her statements.
Here a consistent definition of plastic hinge length is pursued analytically with reference to the actual strain state of the reinforcement.
The more than 600 references provided will help readers pursue original sources.
Opera North did not want to pursue a dialogue: either I cut these gay references or the project would collapse.
