Zakian, Brewer, and Fangman. (1979) 1979. “Replication of Each Copy of the Yeast 2 Micron DNA Plasmid Occurs During the S Phase.”. Cell 17 (4): 923-34. Reference Link
Zakian. (1985) 1985. “Nuclear Structure. Taken With a Grain of Salt.”. Nature 314 (6008): 223-4. Reference Link