Photoheterotrophic hydrogen production of rhodobacter sphaeroides KCTC 1434 under alternating Ar and N2 headspace gas / 
Ruby Lynn G. Ventura, Jey-R S. Ventura, and Young-Sook Oh. 
 - Manila:  Department of Science and Technology  2019 
 - Philippine Journal of Science   Vol. 148 No. 1  March 2019 pages 63- 72 .
<br/><br/><label>ISSN: </label>0031 -7683 
<br/><br/><label>Subjects--Index Terms: </label>Biohydrogen production,  Photofermentation,  Reactor headspace gas,  Rhodobacter sphaeroides