Byoung Hoon Choi, Jin Woo Seo, Jong Min Choi, Hong Bum Shin, Joo-Young Lee, Do-Un Jeong, Kwang Suk Park. Non-constraining sleep/wake monitoring system using bed actigraphy. Med. Biol. Engineering and Computing, 45(1):107-114, 2007. [doi]
Abstract is missing.