@article{HoellerJAIR20,
   title = {{HTN} Planning as Heuristic Progression Search},
   author = {Daniel H{\"{o}}ller and Pascal Bercher and Gregor Behnke and Susanne Biundo},
   journal = {Journal of Artificial Intelligence Research (JAIR)},
   volume = {67},
   pages = {835--880},
   year = {2020}
}