A study of how visitors to these sites create descriptions of links suggests that they may be following simple rules without realizing it. (sciencemag.org)
At the end of most essays you will find links suggesting related supplementary essays (as enrichment) and major essays (as a path to continue through the main story). (history.aip.org)
Soon after, a key link suggested by my student Maureen Raymo on chemical weathering became the central part of that hypothesis. (evsc.virginia.edu)