@article{JRAM_1992__426_153410,
     author = {Joseph H. Silverman},
     title = {Variation of the canonical height on elliptic surfaces {I:} {Three} examples.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {151--178},
     publisher = {mathdoc},
     volume = {426},
     year = {1992},
     zbl = {0739.14023},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1992__426_153410/}
}