%0 Journal Article %A Smith, Graham %A Dawson, Jeremy %T The determination of necessary and sufficient conditions for the existence of a solution to the $3\times3\times3$ multi-index problem %J Applications of Mathematics %D 1979 %P 201-208 %V 24 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1979.103797/ %R 10.21136/AM.1979.103797 %G en %F 10_21136_AM_1979_103797