David Ballard

	1998
2		David Ballard, William Boshuck: Definability and Descent. J. Symb. Log. 63(2): 372-378 (1998)
	1992
1		David Ballard, Karel Hrbacek: Standard Foundations for Nonstandard Analysis. J. Symb. Log. 57(2): 741-748 (1992)

Coauthor Index

1	William Boshuck	[2]
2	Karel Hrbacek	[1]

Colors in the list of coauthors