TY - RPRT TI - A simple design for a small fixed four-electrode brain stimulation array. AU - L Richterich AU - J R Stellar PY - 1997 DO - 10.1016/s0031-9384(97)88990-1 UR - https://pubmed.ncbi.nlm.nih.gov/9251990/ ID - 9251990 ER -