Kolar, A. J.; Olsen, R. K. (1977). "A Convenient, Large-Scale Preparation of 2-Acetamidoacrylic Acid and Its Methyl Ester". Synthesis. 1977 (7): 457–9. doi:10.1055/s-1977-24439. S2CID96352441.
Kolar, A. J.; Olsen, R. K. (1977). "A Convenient, Large-Scale Preparation of 2-Acetamidoacrylic Acid and Its Methyl Ester". Synthesis. 1977 (7): 457–9. doi:10.1055/s-1977-24439. S2CID96352441.