Cvetkovska, M., Lazarevic, M., Koseva, S., Baysal, B., Hamurcu, E.E., Uyanık, N., “Macro azo Initiators Having Poly(ethylene glycol) Units: Synthesis, Characterization and Application to Ab Block Copolymerization”, Journal of Applied Polymer Science, 65, 11, 2173-2181, 1997.