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@article{MOMA_1991__112_3_178532, author = {Todor Gramchev}, title = {Semilinear {Hyperbolic} {Systems} and {Equations} with {Singular} {Initial} {Data.}}, journal = {Monatshefte f\"ur Mathematik}, pages = {99--114}, publisher = {mathdoc}, volume = {112}, number = {3}, year = {1991}, zbl = {0747.35020}, url = {http://geodesic.mathdoc.fr/item/MOMA_1991__112_3_178532/} }
Todor Gramchev. Semilinear Hyperbolic Systems and Equations with Singular Initial Data.. Monatshefte für Mathematik, Tome 112 (1991) no. 3, pp. 99-114. http://geodesic.mathdoc.fr/item/MOMA_1991__112_3_178532/