CORTISIM: A complex dynamical model of the cortisol regulation system. - Ralph H. Abraham; Alan Garfinkel (Simul., 1986)

Encounter with Chaos (J. Peinke, J. Parisi, O. E. Rössler, and R. Stoop). - Ralph H. Abraham (SIAM Rev., 1994)

Basin Configuration of a Six-Dimensional Model of an Electric Power System. - Yoshisuke Ueda; Hiroyuki Amano; Ralph H. Abraham; H. Bruce Stewart (Int. J. Bifurc. Chaos, 2002)

Attractor and Basin Portraits of a Double Swing Power System. - Yoshisuke Ueda; Makoto Hirano; Hirofumi Ohta; Ralph H. Abraham (Int. J. Bifurc. Chaos, 2004)