@article {7429,
	title = {A class of non-local operators for Vorticity waves},
	journal = {Applicable Analysis},
	volume = {84},
	year = {2005},
	pages = {1287-1302},
	url = {http://www.tandfonline.com/doi/abs/10.1080/00036810412331282952?journalCode=gapa20$\#$.VcchuTcZWPA},
	author = {F. Oliveira}
}
