Structural evolution in boron-based clusters B5Aln0/-/+ (n = 1–4): Al atoms transition from the periphery of the planar W-shaped B5 ring to the vertex of the bipyramidLimei Wen, Guoliang Li, Li-Ming Yang and Eric GanzEur. Phys. J. D, 74 11 (2020) 223DOI: https://doi.org/10.1140/epjd/e2020-10409-8