BERCU, Gabriel; MATSUYAMA, Yoshio; POSTOLACHE, Mihai Hessian Metrics & Ricci Solitons Gabriel Bercu, Yoshio Matsuyama, Mihai Postolache - București Fair Partners Publishers 2011 - 182 p.; 24 cm ISBN: 978-073-1877-60-0 Source: C-269864 Index Terms--Genre/Form: manual de instruire Universal Decimal Class. No.: 517