DL routine?

which might be a good DL routine to run once a week?

a lot of 3 day sheiko templates have 1 day of deadlifting programmed per week.
you can find one here: http://sheiko-program.ru/forum/index.php?topic=15.0

As already answered, you usually have a second training day on which you do deadlift and its variations.
In a 3/week schedule it'a the ideal way to train this lift.