1. Kumar, R. Adsorptive Process for Producing Two Gas Streams From aGas Mixture, US Patent 4 915 711
2. Purification by Adsorptive Separation;Kumar;Chem Eng Progr,198935
3. Sircar, S., Kumar, R., Koch, W.R. and Van Sloun, J.K. Recovery of Methane From Landfill Gas US Patent 4 770 676
4. On The Possibility of Omitting the Cooling Step in Thermal Gas Adsorption Cycles;Basmadjian;Can J Chem Eng,1975