et al. is used after a name or a list of names to indicate that other people are also involved. It is used especially when referring to books or articles which were written by more than two people. Blough et al. et alii (and others). written after a list of names to mean that other people are also involved in something
An abbreviation of et ahi, meaning "and others," ordinarily used in lieu of listing all names of persons involved in a proceeding et seq An abbreviation for et sequentes, or et sequential "and the following," ordinarily used in referring to a section of statutes
used as an abbreviation of `et alii' (masculine plural) or `et aliae' (feminine plural) or `et alia' (neutral plural) when referring to a number of people