Cambridge Cluster Database:

Ne_n^{+   [Ref. 25 of the Publication List]}
Ar_n*   ^{[Ref. 35]}
Ar_n   ^{[Ref. 35]}
Ar_nCl₂   ^{[Ref. 27]}
Ar_nNO   ^{[Ref. 38]}

Other sources:

Ar_n^{+   [Ref. 33 of the Publication List]}
He_nNe⁺, He_nAr^{+   [Ref. 43]}