Universal Systems Language: Lessons Learned from Apollo

@article{Hamilton2008UniversalSL,
  title={Universal Systems Language: Lessons Learned from Apollo},
  author={Margaret H. Hamilton and William R. Hackler},
  journal={Computer},
  year={2008},
  volume={41},
  pages={34-43}
}
Based on a preventive, development-before-the-fact philosophy that does not allow errors in the first place, the Universal Systems Language has evolved over several decades, offering system engineers and software developers a language they can use to solve problems previously considered next to impossible to solve with traditional approaches. 

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