1. Grant, C. 1997.

Altruism: A Social Science Chameleon
Zygon 32(3):321-340. CELD ID 3435.

2. Grant, C. 1993.

The Odds Against Altruism: The Sociobiology Agenda
PSCF 45(2):96-110. CELD ID 1658. Full text link available.