[1]
William C. Jagy and Irving Kaplansky.
Indefinite binary quadratic forms with Markov ratio exceeding 9.
Illinois J. Math., 47(1-2):305-316, 2003.
Special issue in honor of Reinhold Baer (1902-1979).
[2]
Irving Kaplansky.
Linear algebra and geometry.
Dover Publications Inc., Mineola, NY, revised edition, 2003.
A second course.
[3]
Irving Kaplansky.
The forms x+32y 2 and x+64y 2.
Proc. Amer. Math. Soc., 131(7):2299-2300, 2003.
[4]
Georgia Benkart, Irving Kaplansky, Kevin McCrimmon, David J. Saltman, and
George B. Seligman.
Nathan Jacobson (1910-1999).
Notices Amer. Math. Soc., 47(9):1061-1071, 2000.
[5]
Irving Kaplansky.
A salute to Euler and Dickson on the occasion of Hy's 65th
birthday.
In Algebra, K-theory, groups, and education (New York, 1997),
volume 243 of Contemp. Math., pages 79-81. Amer. Math. Soc.,
Providence, RI, 1999.