Chow, Wen-Shiung. "Chemical modification of asparagine and asparaginase : evaluation of asparagine analogs, reductively methylated asparaginase and polyethylene glycol-asparaginase conjugate as therapeutic agents /." Doctoral dissertation, Ohio State University, 1981. http://rave.ohiolink.edu/etdc/view?acc_num=osu148715457812295Chicago Manual of Style (17th edition)