@article{RSMUP_1989__81__201_0,
     author = {Zaidman, Samuel},
     title = {Existence of almost-periodic ultra-weak solutions to the equation $u^{\prime }(t) = a(t) Au(t) + f(t)$ in {Hilbert} spaces},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {201--208},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {81},
     year = {1989},
     mrnumber = {1020194},
     zbl = {0679.34041},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1989__81__201_0/}
}