[1] R Vieyra, C Vieyra, P Jeanjacquot, A Marti, M Monteiro, Turn your smartphone into a science laboratory, The Science Teacher 82, 32 (2015).
https://doi.org/10.2505/4/tst15_082_09_32

[2] SensorMobile https://play.google.com/store/apps/details?id=com.sensor.mobile, last accessed September 13, 2017.

[3] PhysicsToolbox https://play.google.com/store/apps/details?id=com.chrystianvieyra.physicstoolboxsuite, last accessed September 13, 2017.