@article{11311_1304454,<br>  author    = {Mannocchi, A and Giordano, C and Topputo, F},<br>  title     = {Control-Constrained Indirect Optimization for Low-Thrust Trajectories with Duty Cycles},<br>  year      = {2026},<br>  doi       = {10.2514/1.G008697},<br>  journal   = {JOURNAL OF GUIDANCE CONTROL AND DYNAMICS},<br>  volume    = {49},<br>  number    = {5},<br>  pages     = {1369--1387},<br>}<br>