TY - RPRT TI - A ring burn--electric or contact? AU - M F Attalla AU - S el-Ekiabi AU - A Al-Baker PY - 1990 DO - 10.1016/0305-4179(90)90211-e UR - https://pubmed.ncbi.nlm.nih.gov/2322399/ ID - 2322399 ER -