TY - GEN TI - Linear Sobolev type equations and degenerate semigroups of operators T2 - Inverse and ill-posed problems series SN - 9067643831 PY - 2003/// PB - VSP KW - Sobolev, Espaces de KW - Semigroupes KW - Equations différentielles linéaires KW - 517.9 Equations différentielles ER -