@article{TM2_2012_XV_1_a2,
     author = {Haryono Tandra},
     title = {On the existence of $\lim_{x\to x_0}f(g(x))$},
     journal = {The Teaching of Mathematics},
     pages = {33 },
     publisher = {mathdoc},
     volume = {XV},
     number = {1},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2012_XV_1_a2/}
}