@article {678,
	title = {Tricomas glandulares en hoja de Heliotropium procumbens Miller},
	journal = {Rojasiana},
	volume = {1},
	year = {1993},
	pages = {16{\textendash}20},
	url = {http://200.10.229.229/files/publicaciones/rojasiana/Vol\%201\%20(1)\%201993/4_Tricomas\%20glandulares.pdf},
	author = {Ortiz, M. and Degen, R. and Ben{\'\i}tez, M. C.}
}
@article {629,
	title = {El g{\'e}nero Heliotropium L. (Boraginaceae) en Venezuela. Sinopsis},
	journal = {Acta Botanica Venezuelica},
	volume = {16},
	year = {1993},
	pages = {83{\textendash}91},
	author = {Rodr{\'\i}guez, G.}
}
@article {522,
	title = {Flavonoids in the resinous exudate of chilean Heliotropium species from Cochranea section},
	journal = {Biochemical Systematics and Ecology},
	volume = {21},
	year = {1993},
	month = {1993///},
	pages = {744 - 744},
	keywords = {heliotropium-filifolium h-chenopodiaceum var ericoideum boraginaceae external flavonoids},
	isbn = {0305-1978},
	url = {://A1993MG11300015},
	author = {Urz{\'u}a, A. and Villarroel, L. and Torres, R. and Teillier, S.}
}
