1. Solid State Angular Rate Gyro. http://www.watson-gyro.com/products/rate-gyro-ARS-spec.html. Solid State Angular Rate Gyro. http://www.watson-gyro.com/products/rate-gyro-ARS-spec.html.
2. Andriod Developer Sensor Event. http://developer.android.com/reference/android/hardware/SensorEvent.html. Andriod Developer Sensor Event. http://developer.android.com/reference/android/hardware/SensorEvent.html.
3. Android sensor sevice source code. https://android.googlesource.com/platform/frameworks/native/+/master/services/sensorservice/. Android sensor sevice source code. https://android.googlesource.com/platform/frameworks/native/+/master/services/sensorservice/.
4. x-IMU sensor board. http://www.x-io.co.uk/products/x-imu/. x-IMU sensor board. http://www.x-io.co.uk/products/x-imu/.
5. Snapily 3D. http://www.snapily3d.com/. Snapily 3D. http://www.snapily3d.com/.