@base . a ; ; "20210206230700.0"^^ ; ; . a , ; "Handbook of differential equations. Evolutionary equations (Online)" . a ; "1874-5717" ; . a , , ; , , ; "Handbook of differential equations" ; ; ; ; "1874-5717" ; ; ; "1874-5717" ; ; "1874-5717" ; "Handbook of differential equations" , "Handbook of differential equations. Evolutionary equations (Online)" ; ; "http://www.sciencedirect.com/science/handbooks/18745717" . a . a ; "1874-5717" ; . . "Netherlands" . a ; .