D. Tan, B. Kirbus, M. Rüsing, T. Pietsch, M. Ruck, and L. M. Eng, “Resource‐Efficient Low‐Temperature Synthesis of Microcrystalline Pb2B5O9X (X = Cl, Br) for Surfaces Studies by Optical Second Harmonic Generation,”
Small, vol. 16, no. 23, Art. no. 2000857, 2020, doi:
10.1002/smll.202000857.