# Article:dghl89b

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@Article{dghl89b, author = {G. M. Downs and V. J. Gillet and J. D. Holliday and M. F. Lynch}, title = {{T}heoretical {A}spects of {R}ing {P}erception and {D}evelopment of the {E}xtended {S}et of {S}mallest {R}ings {C}oncept}, journal = {J. Chem. Inf. Comput. Sci.}, year = {1989}, volume = {29}, pages = {187-206}, abstract = {There are many unresolved issues concerning the definition of an optimum ring set for retrieval purposes. This paper considers the problems associated with processing planar (two-dimensional) representations of three-dimensional structures. To overcome the ambiguity of such representations, a new ring set is defined in terms of simple faces and cut faces. The concept of a cut-vertex graph is introduced to explain the combinatorial relationship between the number of simple faces and the number of planar embedments.}, }