As is well known. multi-hop range-free localization algorithms demonstrate pretty good performance in isotropic networks in which sensor nodes distribute evenly and densely. However. these algorithms are easily affected by network topology. https://www.bekindtopets.com/save-big-T-S-Brass-B-0665-CR-BSTR-Wall-Mount-Rough-Chrome-Service-Sink-Faucet-w-Stops-and-Cerama-Cartridges-super-buy/