The upper connected geodetic number and forcing connected geodetic number of a graph. - A. P. Santhakumaran; P. Titus; Johnson John (Discret. Appl. Math., 2009)

The forcing Steiner number of a graph. - Johnson John; A. P. Santhakumaran (Discuss. Math. Graph Theory, 2011)

On the forcing geodetic and forcing Steiner numbers of a graph. - Johnson John; A. P. Santhakumaran (Discuss. Math. Graph Theory, 2011)

The geodetic hop domination number of complementary prisms. - D. Anusha; Johnson John; S. Joseph Robin (Discret. Math. Algorithms Appl., 2021)