@article {535,
	title = {Non-twist field line mappings for tokamaks with reversed magnetic shear},
	journal = {Brazilian Journal of Physics},
	volume = {34},
	year = {2004},
	month = {Jan-01-2004},
	pages = {1759 - 1765},
	issn = {0103-9733},
	doi = {10.1590/S0103-97332004000800046},
	url = {http://www.scielo.br/scielo.php?script=sci_arttext\&pid=S0103-97332004000800046\&lng=en\&nrm=iso\&tlng=enhttp://www.scielo.br/pdf/bjp/v34n4b/a46v344b.pdf},
	author = {M Roberto and Elton C. da Silva and I. L. Caldas and R L Viana}
}
