Pokrovskiĭ V M, Abushkevich V G, Dashkovskiĭ A I, Kade A Kh, Korobkina E V
Fiziol Zh SSSR Im I M Sechenova. 1986 Feb;72(2):183-8.
In electrical stimulation of the frog vago-sympathetic nerve, oscillations of the cardiac rhythm depended upon changes of the pacemaker MPs.