Michael Honold et.al.: Self-locking sma actuator for optical zoom in smartphones. In: International Conference and Exhibition on New Actuator Systems and Applications, Berlin; Offenbach, VDE Verlag GmbH, 2021, pp. 152-155. (Actuator 2021, Online event, 17-19 Februar).
URL: https://ieeexplore.ieee.org/document/9400568