  We prove that all the meromorphic solutions of the nonlinear differential
equation c0 u"' + 6 u^4 + c1 u" + c2 u u' + c3 u^3 + c4 u'+ c5 u^2 + c6 u +c7=0
are elliptic or degenerate elliptic, and we build them explicitly.

Classical Analysis and ODEs;Complex Variables