José Cáceres M. Carmen Hernando Mercè Mora Ignacio M. Pelayo María Luz Puertas Carlos Seara David R. Wood On the Metric Dimension of Cartesian Products of Graphs. 423-441 2007 21 SIAM J. Discrete Math. 2 http://dx.doi.org/10.1137/050641867 db/journals/siamdm/siamdm21.html#CaceresHMPPSW07