TY  - JOUR
AU  - C. C. Travis
AU  - G. F. Webb
TI  - Perturbation of strongly continuous cosine family generators
JO  - Colloquium Mathematicum
PY  - 1981
SP  - 277
EP  - 285
VL  - 45
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-45-2-277-285/
DO  - 10.4064/cm-45-2-277-285
LA  - en
ID  - 10_4064_cm_45_2_277_285
ER  -