@article{DMGT_2017_37_4_a10,
     author = {Hammack, Richard H. and Taylor, Dewey T.},
     title = {Proper {Connection} {Of} {Direct} {Products}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {1005--1013},
     publisher = {mathdoc},
     volume = {37},
     number = {4},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2017_37_4_a10/}
}