Why use articles for research?
As you review bibliographies, reviews of literature, reference lists, you will discover additional sources to possibly use.
Find them using the CitationLinker.
Now is the time to be more specific with your searching. Articles tend to cover very specific or niche topics, and are also published more quickly than books, meaning the information is typically more current than the general information you can gather from books.
Possible keywords to use for this example: Xiuhcóatl Huitzilopochtli Xiuhtecuhtli Aztec Pre-Columbian Mesoamerican sculpture art carving relief serpent snake animal iconography symbolism religion
Academic Search Ultimate offers access to an unprecedented collection of resources including journals, magazines, reports, books, and videos. Many are peer-reviewed and full-text. Subjects range from astronomy to zoology.