Mark Brittenham	coauthored with	Rachel Roberts	MR1472884 (98j:57040)
Rachel Roberts	coauthored with	John Shareshian	MR1969207 (2004e:57023)
John Shareshian	coauthored with	Robert M. Guralnick	MR1953713 (2004b:20072)
Robert M. Guralnick	coauthored with	Hyman Bass	MR0818444 (87a:13011)
Hyman Bass	coauthored with	John Willard Milnor	MR0244257 (39 #5574)