TY - RPRT TI - Nightcap: a reliable system for determining sleep onset latency. AU - Jose L Cantero AU - Mercedes Atienza AU - Robert Stickgold AU - J Allan Hobson PY - 2002 DO - 10.1093/sleep/25.2.238 UR - https://pubmed.ncbi.nlm.nih.gov/11902434/ ID - 11902434 ER -