Brief announcement: STALK: a self-stabilizing hierarchical tracking service for sensor networks

A bleaching composition for a fibrous material comprises an aqueous medium having dissolved therein sodium chlorite and sodium polyphosphate, said sodium polyphosphate being such that the molar ratio of Na2O to P2O5 is greater than 0.1 but less than 1.0 and that a 1 weight percent aqueous solution thereof has a pH of not higher than 3; and a method for bleaching a fibrous material comprises bleaching a fibrous material with said composition.