Al-Shukri, S. et al. 2021. Spiro-cyclotriphosphazene with three functional end groups: synthesis and structural characterization of new polycyclotriphosphazenes with Schiff-base groups. Polimery. 66, 6 (Jul. 2021), 341–349. DOI:https://doi.org/10.14314/polimery.2021.6.2.