@article{AM2_1986__31_137160,
     author = {Gary Chartrand and Mark Johnson},
     title = {Connected graphs containing a given connected graph as a unique greatest common subgraph.},
     journal = {Aequationes mathematicae},
     pages = {213--222},
     year = {1986},
     volume = {31},
     zbl = {0611.05056},
     url = {http://geodesic.mathdoc.fr/item/AM2_1986__31_137160/}
}