TY - RPRT TI - Quantum Hall effect at a four-terminal junction. AU - DG Ravenhall AU - HW Wyld AU - RL Schult PY - 1989 DO - 10.1103/physrevlett.62.1780 UR - https://pubmed.ncbi.nlm.nih.gov/10039766/ ID - 10039766 ER -