by Craven, B. D.
by Tikhomirov, V. M.
by Ekeland, Ivar | Temam, Roger.
by Attouch, Hedy | Buttazzo, Giuseppe | Michaille, Gerard.
by Osmolovskii, N. P | Maurer, Helmut.
by Testa, Matteo | Valsesia, Diego [aut] | Bianchi, Tiziano [aut] | Magli, Enrico [aut].
by Guler, Osman.
by Hendrix, Eligius M. T | G. -Toth, Boglarka.
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