[1
]Heat and Mass Transfer Technological Center, Technical University of Catalonia, C/Colom
11, 08222 Terrassa, Spain
[2
]Keldysh Institute of Applied Mathematics, 4A, Miusskaya Sq., Moscow 125047, Russia
[3
]Johann Bernoulli Institute for Mathematics and Computer Science, University of Groningen,
P.O. Box 407, 9700 AK Groningen, The Netherlands