Journal of Liaoning Petrochemical University
 
Symplectic Geometry Characterization of Self-Adjoint Domains for Symmetric Differential Operators in Direct Sum Spaces(Ⅳ)
WNAG Zhi-jing
Journal of Liaoning Petrochemical University . 2010, (2): 68 -70 .  DOI: 10.3696/j.issn.1672-6952.2010.02.019