Using agile and rebound methods
Sourcing methods

Quality sources can sometimes be discovered by simply clicking on an already known source. This is the principle of "serendipity", or the art of encouraging chance and serendipity. Of course, it's all about combining rigor and randomness in harmony; as Louis Pasteur said, "chance only favors the prepared mind".

Agile methods also involve searching by similarity. In the age of artificial intelligence, Google's "similar pages" feature is no longer very effective. Browser extensions such as Similar Sites are preferable: simply activate this extension when browsing a relevant site, and you'll be presented with a list of related sites. Even if not all suggestions are relevant, these extensions can be used to discover specialized sources in a given field.

The links at the end of each Wikipedia article can also be useful for discovering relevant...