S.  Bala, Adhikary, A., Bhattacharya, S., Bishwas, M. Sen, Poddar, P., and Mondal, R., ?Ln(8) (Ln = Gd, Ho, Er, Yb) Butterfly core-exhibiting magnetocaloric effect and field-induced SMM behavior for Er analouge?, ChemistrySelect, vol. 2, no. 34, pp. 11341-11345, 2017.