OK so here's an example I found online:
You should have a day during the week, where you train with short intervals of 15-90 seconds. On this day you ride approx. ½-1 hours warm up in medium range tempo. You then typically ride 5 x 60 second intervals (remember to rest between every interval) and after this ride a 5 x 90 second interval.

So for 5 times, you ride hard out for 60 seconds the rest then ride hard another 60 seconds? How long to you rest?