Schwinger-Dyson approach to light pseudoscalars
  We review briefly some of the successes of Schwinger-Dyson (SD) approach to the physics of quarks and hadrons, primarily light pseudoscalar mesons including eta and eta'. The main purpose of this paper is to point out that SD results on eta and eta' mesons can be formulated and given also in the two-mixing-angle scheme. 
Dubravko Klabucar (Zagreb University) and Dalibor Kekez (Institute   Rudjer Boskovic)