By Clifford R. Hollander
Communications of the ACM,
Vol. 20 No. 4, Pages 261-262
In a recent paper, Shneiderman and Scheuermann  have defined an interesting operation, called uniform insertion, whereby a (linked) data structure G2 can be embedded within another structure G1 in such a way that each data node of G1 serves as an entry node for G2. This communication points out and corrects an error in their definition, while preserving the spirit of that operation.
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