Urvantseva M V, Iurovitskiĭ Iu G, Mil'man L S
Ontogenez. 1984 Jul-Aug;15(4):368-73.
A cooperative activation of glycogenolysis was found in the chick embryo skeletal muscles (upon electrostimulation) on the 13th day of incubation (stage 39 after Hamburger, Hamilton, 1951).