Heart rate variability in relation of autonomic dysfunctions of nervous systemVilkis, A.; Tuulik, Viiu; Agudin, V.; Altrov, EppProceedings of the 13th Triennial Congress of the International Ergonomics Association, June 29-July 4, 1997, Tampere : From Experience to Innovation : IEA'97. Vol. 71997 / p. 583