1
Netuka I, Veselý J. Mean Value Property and Harmonic Functions[C]., 1994: 359-398.
2
Alexander Grigoryan · Wolfhard Hansen. A LIOUVILLE PROPERTY FOR SCHRODINGER OPERATORS. 1998.
3
Hansen W, Nadirashvili N S. Mean values and harmonic functions[J]. Mathematische Annalen, 1993, 297(1): 157-170.
4
Coville J. Harnack type inequality for positive solution of some integral equation[J]. Annali di Matematica Pura ed Applicata, 2013, 191(3): 503-528.
5
Hansen W. A Liouville property for spherical averages in the plane[J]. Mathematische Annalen, 2001, 321(3): 539-552.
6
Hansen W. A Strong Version of Liouville\u0027s Theorem[J]. American Mathematical Monthly, 2016.
7
Hansen W. Littlewood\u0027s one-circle problem, revisited[J]. Expositiones Mathematicae, 2008, 26(4): 365-374.
8
Hansen W. Liouville\u0027s theorem and the restricted mean value property in the plane[J]. Journal de Mathématiques Pures et Appliquées, 1998, 77(9): 943-947.
9
Hansen W, Nadirashvili N. Harmonic functions and averages on shells[J]. Journal D Analyse Mathematique, 2001, 84(1): 231-241.
10
Kadiri M E. LIOUVILLE\u0027S THEOREM AND THE RESTRICTED MEAN PROPERTY FOR BIHARMONIC FUNCTIONS[C]., 2004.