* [http://taylorandfrancis.metapress.com/app/home/contribution.asp?wasp=2b5d53ed5f9d474ab1e71e1690546798&referrer=parent&backto=searcharticlesresults,2,1000;homemain,1,1;''Bernard Schuster and Joseph Katz: KGB Master Spies in the United States''] | * [http://taylorandfrancis.metapress.com/app/home/contribution.asp?wasp=2b5d53ed5f9d474ab1e71e1690546798&referrer=parent&backto=searcharticlesresults,2,1000;homemain,1,1;''Bernard Schuster and Joseph Katz: KGB Master Spies in the United States''] |