Reduction of Tungstates for Production of Silver—Tungsten—Nickel ElectricalContacts. Powder Metallurgy. 1985-01, 28 (1): 36–42 [2022-08-29]. ISSN 0032-5899
object fails to do so and therefore cannot make contact with the live electricalcontacts. However, the device can still be defeated by inserting two objects