6MyersG,WorkmanM.BirkettC,etal.Problemsinmeasuringheartratevariabilityofpatientswithcongestiveheartfailure. Journal of Electrocardiology . 1992
7Timo T. Laitio MD Timo H. Mkikallio MD Heikki V. Huikuri MD Erkki S. H. Kentala MD Pekka Uotila MD Jouko R. Jalonen MD Hans Helenius MSc Jaakko Ha.Relation of heart rate dynamics to the occurrence of myocardial ischemia after coronary artery bypass grafting. The American Journal of Cardiology . 2002
8Apparies RJ,Riniolo TC,Porges SW.A psychophysiological investigation of the effects of driving longer-combination vehicles. Ergonomics . 1998
9Witheford D K. TRUCK ESCAPE RAMPS. Nchrp Synthesis of High-way Practice, 1992.
10ING P. TRUCK ARRESTER BEDS ( PERFORMANCE REVIEW).Safety,1991.