@Article{zbMATH00007549,
Author = {M. A. {Freedman}},
Title = {{Further investigation of the relation of the operator \(\partial/\partial\sigma+ \partial/\partial\tau\) to evolution governed by accretive operators}},
FJournal = {{Houston Journal of Mathematics}},
Journal = {{Houston J. Math.}},
ISSN = {0362-1588},
Volume = {16},
Number = {3},
Pages = {317--346},
Year = {1990},
Publisher = {University of Houston, Department of Mathematics, Houston, TX},
Language = {English},
MSC2010 = {35R70 35G10 35K25 47J05 47H06},
Zbl = {0811.35172}
}