@base . a ; "1614-7138" ; . a . a , , ; , , ; "International journal of distributed energy resources." ; ; ; "1614-7138" ; ; "1614-7138" ; ; "1614-7138" ; "International journal of distributed energy resources" , "International journal of distributed energy resources." ; . a ; "1614-7138" ; . a ; ; "20170519105100.0"^^ ; ; . a ; . . "Germany" . a , ; "International journal of distributed energy resources" .