G. Scianna: Global Existence for a Two-Phase Stefan Problem with Interior Control and Discontinuity at the Interface (Preprint) 2001 G. Scianna, P. Tilli: A variational approach to the Hele--Shaw flow with injection Communications in Partial Differential Equations Vol. 30, p. 1359-1378, 2005 M. Biagini, G. Scianna: On a One-Phase Stefan Problem (Preprint) 2012 G. Bellettini, M. Paolini, F. Pasquarelli, G. Scianna: Covers, soap films and BV functions (Submitted Paper) 2017 G. Bellettini, R. Scala, G. Scianna: Upper bounds for the relaxed area of $S^1$-valued Sobolev maps and its countably subadditive interior envelope (Preprint) 2023 R. Scala, G. Scianna: On the $L^1$-relaxed area of graphs of $BV$ piecewise constant maps taking three values (Preprint) 2023