| An Empirical Characterization of Radio Signal Strength Variability in 3-D IEEE 802.15.4 Networks Using Monopole Antennas Recent countries visiting this post |  |
 | 5 | United States |
| An Empirical Characterization of Radio Signal Strength Variability in 3-D IEEE 802.15.4 Networks Using Monopole Antennas Recent countries visiting this post | |
| 5 | United States |