“INTERACTIONS BETWEEN C6H4(CH2NH3)2[PhCO2]2, Et2NH2[Ph(OH)CO2] AND CuCl2, ErCl3 or SnPh3OH: AN INFRARED STUDY” (2017) Journal of Engineering Studies and Research, 23(1), pp. 42–45. doi:10.29081/jesr.v23i1.91.