BOLOGNA, March 10 — Inter Milan took another step towards a 20th Serie A title yesterday with a 1-0 win at in-form Bologna which extended their massive league lead to 18 points.

Yann Bisseck headed home the only goal of a tight contest in the 37th minute at the Stadio Renato Dall’Ara as Inter geared up for Wednesday’s Champions League decider with Atletico Madrid in positive fashion.