@inbook {10080, title = {Social Interactions, Groups and Scheduling Constraints}, booktitle = {The Oxford Handbook of Analytic Sociology}, year = {2009}, pages = {498-520}, publisher = {Oxford University Press}, organization = {Oxford University Press}, address = {New York}, url = {http://www.us.oup.com/us/catalog/general/subject/Sociology/?view=usa\&ci=9780199215362}, author = {Christopher Winship}, editor = {Peter Hedstr{\"o}m and Peter Bearman} }