Ab. Balakin et Fg. Suslikov, EXACTLY INTEGRABLE MODEL OF EVOLUTION OF RELATIVISTIC ISOSPIN SYSTEM IN THE FIELD OF GRAVITATIONAL-RADIATION, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 324(10), 1997, pp. 619-626
The exact solution of the dynamical equations of particles with isotop
ic spin interacting with an external Yang-Mills and gravitational fiel
ds is presented in the particular case of a PP-wave (plane fronted wav
e with parallel rays).