Text this: Sensor density for complete information coverage in wireless sensor networks

 _    _     ______    ______     ___     ______   
| || | ||  /_   _//  /_   _//   / _ \\  |      \\ 
| || | ||   -| ||-   `-| |,-   / //\ \\ |  --  // 
| \\_/ ||   _| ||_     | ||   |  ___  |||  --  \\ 
 \____//   /_____//    |_||   |_||  |_|||______// 
  `---`    `-----`     `-`'   `-`   `-` `------`