Yibing, Shen, Liouville-type Theorems for Subharmonic Functions on Complete Manifolds, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 7(4), 1991, pp. 375-382
Applying the generalized maximum principle. a Liouvilletype theorem of subharmonic functions on complete Riemannian manifolds is shown and a Liouville-type differential inequality on properly immersed complete submanifolds is given.