Determining average tuition costs is difficult, since rates vary greatly among institutions, and some schools even fluctuate rates per semester. U.S. News & World Report ranks public and private engineering graduate schools annually based on the quality of the program, teachers and student outcomes.
Princeton's WordNet(3.00 / 6 votes)Rate this definition: et al., et al, et alii, et aliae, et alia(adverb) and others ('et al.' is used as an abbreviation of `et alii' (masculine plural) or `et aliae' (feminine plural) or `et alia' (neuter plural) when referring to a number of people)
English - US. If pushed, I would put the 's with Johann: Johann's et al. findings. I would not attach it to et al., because al. is the abbreviation of a Latin word, and Latin doesn't form the possessive by 's. I would far prefer to get around the question by writing: the findings of Jahann et al. Dec 1, 2009.