@misc{indiciae53bb2e6198a5, title = {Space Launch System (SLS) Program NASA Research Announcement (NRA) Advanced Booster (AB) Engineering Demonstration and Risk Reduction}, author = {Crumbly, Christopher M. and Craig, Kellie D.}, year = {2011}, url = {https://ntrs.nasa.gov/citations/20120003027}, note = {Source identifier: 20120003027} }