 "  Peter Allen and Liz Varga, "Modelling sustainable energy futures for the UK , "  Futures 57 (2014) 28-40.
<fluency>  "  Peter Allen and Liz Varga, "Modelling sustainable energy futures for the UK , "  Futures 57 (2014) 28-40.
 " Peter Allen and Liz Varga, "Modelling sustainable energy futures for the UK , " , Futures 57 (2014) 28-40.