@article{DMGT_2012_32_4_a2,
     author = {Shiu, Wai and Chen, Hong-Yu and Chen, Xue-Gang and Sun, Pak},
     title = {On the total restrained domination number of direct products of graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {629--641},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2012_32_4_a2/}
}