Comments on "Bifurcations in DC-DC Switching Converters: Review of   Methods and Applications"
  In a review paper [1] (El Aroudi, et al., 2005), two stability conditions for DC-DC converters are presented. However, these two conditions were published years earlier at least in a journal paper [2] (Fang and Abed, 2001). In this note, the similar texts of [1] and [2] are compared. 
Chung-Chieh Fang
cs.SY math.DS nlin.CD