17. McCool CS, Beattie J, Firn J, Lehnert C, Kulk J, Bawden O, et al. Efficacy of Mechanical Weeding Tools: a study into alternative weed management strategies enabled by robotics. IEEE Robotics and Automation Letters 2018, 1–1, https://doi.org/10.1109/LRA.2018.2794619.