“SYNTHESIS, CHARACTERISATION AND FLUORESCENCE SENSING PROPERTIES OF TETRADENTATE N,N’–BIS(SALICYLIDENE)–1,3-PROPANEDIAMINE FOR METAL IONS DETECTION: PRELIMINARY STUDY”, UMT JUR, vol. 3, no. 3, pp. 177–182, Jul. 2021, doi: 10.46754/umtjur.v3i3.229.