Pietruszka, N., Z. Brzozowski, and L. Żabski. 2022. “A New Group of Liquid Reactive Nitrogen and Nitrogen-Phosphorus Flame Retardants for Self-Extinguishing Polyurethane Expanded Polymers. Part II. Applications to Flexible Polyurethane Foams”. Polimery 45 (4):282-87. https://doi.org/10.14314/polimery.2000.282.