@article {19102,
	title = {Hawkmoth pollination of aerangoid orchids in Kenya, with specieal reference to nectar sugar concentration gradients in the floral spurs},
	journal = {American Journal of Botany},
	volume = {94},
	year = {2007},
	month = {2007},
	pages = {650-659},
	keywords = {AERANGIS, AGRIUS, COELONIA, DAPHNIS, HIPPOTION, KENYA, NECTAR COMPOSITION, ORCHIDACEAE, POLLINATION, POLLINATOR SPECIFICITY, SPHINGIDAE, XANTHOPAN},
	author = {Martins, D. J. and Johnson, S. D.}
}
@article {19103,
	title = {Distance and quality of natural habitat influence hawkmoth pollination of cultivated papaya},
	journal = {International Journal of Tropical Insect Science},
	volume = {29},
	year = {2009},
	month = {2009},
	pages = {114-123},
	keywords = {AGRICULTURE, AGRIUS, BIODIVERSITY, CARICA, CARICACEAE, CONSERVATION, EAST AFRICA, HABITAT DISTURBANCE, HIPPOTION, NEPHELE, POLLINATION, POLLINATOR SPECIFICITY, SPHINGIDAE},
	author = {Martins, D. J. and Johnson, S. D.}
}
@article {16555,
	title = {Pollinator-mediated selection on flower-tube length in a hawkmoth-pollinated {IGladiolus} (Iridaceae)},
	journal = {Proceedings of the Royal Society of London},
	volume = {269},
	year = {2002},
	note = {B},
	month = {2002},
	pages = {631-636},
	keywords = {AGRIUS, GLADIOLUS, IRIDACEAE, POLLINATION, POLLINATOR SPECIFICITY, SELECTION, SOUTH AFRICA, SPHINGIDAE, WORLDMAP1},
	author = {Alexandersson, R. and Johnson, S. D.}
}
