A method for establishing upper bounds for singular perturbation problems

Arkady Poliakovsky

Comptes Rendus. Mathématique, Volume 341 (2005) p. 97-102

On a minimization problem related to lifting of BV functions with values in S1

Arkady Poliakovsky

Comptes Rendus. Mathématique, Volume 339 (2004) p. 855-860