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- [45] On positivity of solutions of degenerate boundary value problems for second-order elliptic equations Israel Journal of Mathematics, 2002, 132 : 125 - 168
- [47] BOUNDARY VALUE PROBLEMS FOR SECOND-ORDER PARABOLIC AND ELLIPTIC EQUATIONS IN DINI SPACES DOKLADY AKADEMII NAUK SSSR, 1971, 198 (03): : 533 - &
- [49] Self-Adjoint Second-Order Equations for Fermions and the Foldy–Wouthuysen Representation Physics of Particles and Nuclei, 2018, 49 : 725 - 729