TY - JOUR AU - Glasser, M. Lawrence AU - Zhou, Yajun PY - 2017 SN - 1382-4090 UR - http://uvadoc.uva.es/handle/10324/40084 AB - We show that adouble integral remains invariant as one trades some parameters. This invariance property is suggested from symmetry considerations in the operating characterstics of a semiconductor Hall-effect device. LA - eng PB - Springer TI - A functional identity involving elliptic integrals DO - 10.1007/s11139-017-9915-4 ER -