ICONKAT: an integrated constructivist knowledge acquisition tool. - Kenneth M. Ford; Alberto J. Cañas; Jeremy Jones; Howard Stahl; Joseph D. Novak; Jack R. Adams-Webber (Knowl. Acquis., 1991)

The origins of the concept mapping tool and the continuing evolution of the tool. - Joseph D. Novak; Alberto J. Cañas (Inf. Vis., 2006)