We have a good number of secondary critical works on Petronius. Some helpful subject headings are:

	Petronius Arbiter. Satyricon
	Petronius Arbiter -- Technique
	Satire, Latin -- History and criticism Petronius Arbiter. Satyricon -- Criticism and interpretation

I'm sort of loving this new version of WorldCat, a huge database encompassing thousands of library catalogs worldwide. The search is easy and intuitive, you can easily limit your searches to books in English, and the link to Tripod is usually seamless.

Provides full-text and page images from many of the top journals in most academic disciplines. Coverage is from the inception of the journal through three to five years ago.

This online version of the print edition offers bibliographic records of journal articles, conference proceedings and collection articles. This database focuses on many subject areas relating to Classical Studies including Philosophy, History and the antiquities. Covers 1959-present.

The Thesaurus linguae Latinae is the most comprehensive dictionary of the Latin language; it covers every author and work from the first items of Latin up to 600 AD. The long-term project, situated at the ‘Bayerische Akademie der Wissenschaften, took up the work in 1894 and the first fascicle was printed in 1900. At the present moment, the staff at Munich are treating words beginning with the letter ‘p’. The articles are still published in printed form, but they are now also available in a CD-Version for WAY too much money.