摘要： Under some condtions, one seows that the generalized solutions of the first boundary value problem for the equation
(∂u)/∂t+(-1)mDmA(DmB(u))=0, have the property of finite speed of propagation.
尹景学. FINITE SPEED OF PROPAGATION OF SOLUTIONS FOR SOME QUASILINEAR HIGHER ORDER PARABOLIC EQUATIONS WITH DOUBLY STRONG DEGENERATION[J]. 数学物理学报(英文版), 1991, 11(2): 164-174.
Yin Jingxue. FINITE SPEED OF PROPAGATION OF SOLUTIONS FOR SOME QUASILINEAR HIGHER ORDER PARABOLIC EQUATIONS WITH DOUBLY STRONG DEGENERATION[J]. Acta mathematica scientia,Series B, 1991, 11(2): 164-174.