@article {315583,
	title = {Well digging by Semliki chimpanzees: New data on laterality andpossible significance of hydrology},
	journal = {Pan Africa News},
	volume = {20},
	year = {2013},
	pages = {5-8},
	author = {McGrew, WC and Marchant, LF and Payne, CLR and Webster, TH and Hunt, KD}
}
