Characterizing Solutions to Simple Differential Equations: 10729. - David P. Bellamy; Felix Lazebnik; Ray Redheffer (Am. Math. Mon., 2000)

All Solutions in the Unit Cube: 10764. - Ray Redheffer; Robin Chapman (Am. Math. Mon., 2000)

Problem 11135. - Ray Redheffer (Am. Math. Mon., 2005)

The Behavior of Solutions near a Stable or Semistable Stationary Point. - Ray Redheffer (Am. Math. Mon., 2005)

A Cousin of Gronwall's Inequality: 11135. - Ray Redheffer; Richard Stong (Am. Math. Mon., 2006)