TY - RPRT TI - Frequency analysis of the P wave: comparative techniques. AU - P Stafford AU - P Denbigh AU - R Vincent PY - 1995 DO - 10.1111/j.1540-8159.1995.tb02516.x UR - https://pubmed.ncbi.nlm.nih.gov/7731874/ ID - 7731874 ER -