***** To join INSNA, visit http://www.insna.org ***** Dear Leon, You kindly sent me those references in Physical Review, and I accidently deleted your email. Please resend your message. Sorry for the inconvenience. Best David =============================================================== David Kaplan Voice: 302-831-8696 Professor of Education Fax: 302-831-4110 School of Education email mailto:[log in to unmask] University of Delaware Homepage: http://www.udel.edu/dkaplan Newark DE 19716 SOE page: http://www.udel.edu/educ =============================================================== _____________________________________________________________________ SOCNET is a service of INSNA, the professional association for social network researchers (http://www.insna.org). To unsubscribe, send an email message to [log in to unmask] containing the line UNSUBSCRIBE SOCNET in the body of the message.