@article{AM2_1993__45_2-3_137517,
     author = {Sandi Klavzar},
     title = {Strong products of ?-critial graphs.},
     journal = {Aequationes mathematicae},
     pages = {153--162},
     publisher = {mathdoc},
     volume = {45},
     number = {2-3},
     year = {1993},
     zbl = {0787.05039},
     url = {http://geodesic.mathdoc.fr/item/AM2_1993__45_2-3_137517/}
}