Haig, David2009-07-081990Haig, David. 1990. Brood reduction and optimal parental investment when offspring differ in quality. American Naturalist 136(4): 550-556.1537-53230003-0147http://nrs.harvard.edu/urn-3:HUL.InstRepos:3153310No abstracten-USBrood Reduction and Optimal Parental Investment when Offspring Differ in Quality10.1086/285113