Gives the home page of the conference where the paper "Increasing the Concurrency in Estelle" is presented.
'Increasing the Concurrency in Estelle' is the Title of the paper; home page of the conference refers to HomePage;
SELECT DISTINCT T2.HomePage FROM Paper AS T1 INNER JOIN Conference AS T2 ON T1.ConferenceId = T2.Id WHERE T1.Title = 'Increasing the Concurrency in Estelle'