F. GUO, C.-F. BI, Y.-H. FAN, Y. XIAO, X.-T. HE, and J.-K. XU, “Synthesis, Crystal Structure and Antibacterial Properties of N-(2-Hydroxy-1-naphthalidene)-4-aminoantipyrine”, ajc, vol. 19, no. 3, pp. 1846–1852, Mar. 2010.