%0 Journal Article %T Positive solutions of a third-order three-point boundary-value problem %A Bo Yang %J Electronic Journal of Differential Equations %D 2008 %I Texas State University %X We obtain upper and lower estimates for positive solutions of a third-order three-point boundary-value problem. Sufficient conditions for the existence and nonexistence of positive solutions for the problem are also obtained. Then to illustrate our results, we include an example. %K Fixed point theorem %K cone %K multi-point boundary-value problem %K upper and lower estimates %U http://ejde.math.txstate.edu/Volumes/2008/99/abstr.html