Working after Dinner

I try not to write after dinner, but if I have to, I make sure I take a long dinner hour, 5-7 say, and then write a predetermined length of time, like two hours from 7-9. I'd be very happy only writing in the morning, but I have a few mornings I know I am know are not going to work, so I am going back to the office after dinner tonight. I'm at a stage in my article where I have heavy books I need to enter into the bibliography, so I need to do that in one specific place.