摘要： F. Treves[1] had studiied an interesting example on the discrete phenomena in the uniqueness of the initial value problem. He showed the Cauchy problem.
王传芳, 秦禹春. 具第三类边界条件的混合问题的非离散现象[J]. 数学物理学报, 1981, 1(Z1): 275-284.
Wang Chuanfang, Qin Yuchun. THE NONDISCRETE PHENOMENA OF MIXED PROBLEM POSSESSING THE 3RD CLASS BOUNDARY CONDITION[J]. Acta mathematica scientia,Series A, 1981, 1(Z1): 275-284.