2 citations to https://www.mathnet.ru/eng/ljm243

1. A. N. Pechen, “On the Analysis of Quantum Control Landscapes Using Gradient Projection Method and Pontryagin Maximum Principle”, Lobachevskii J Math, 46:6 (2025), 2622  
2. I. M. Korolev, A. N. Pechen, “Numerical Analysis of Quantum Control Landscapes for Single-Qubit Gate Generation in Three-Level Fluxonium Systems”, Lobachevskii J Math, 46:6 (2025), 2581