1. Design of a two-step pulsed pressure-swing adsorption-based oxygen concentrator
2. Oxygen concentrators for the delivery of.supplemental oxygen in remote high-altitude areas;James;Wilderness Environ. Med.,2000
3. Linde AG;Christian,2005
4. Oxygen and Nitrogen Separation from Air Using Zeolite Type 5A;Hussein;Al-Qadisiyah J. Eng. Sci.,2015
5. ZEOTECH
https://www.zeotech.se/