Modulus of continuity of the coefficients and loss of derivatives in the strictly hyperbolic Cauchy problem M Cicognani, F Colombini Journal of Differential Equations 221 (1), 143-157, 2006 | 54 | 2006 |

The Cauchy problem for strictly hyperbolic operators with non-absolutely continuous coefficients M Cicognani Tsukuba journal of mathematics 27 (1), 1-12, 2003 | 37 | 2003 |

WELL-POSEDNESS FOR DEGENERATE SCHRÖDINGER EQUATIONS. M Cicognani, M Reissig Evolution Equations & Control Theory 3 (1), 2014 | 25 | 2014 |

Sharp regularity of the coefficients in the Cauchy problem for a class of evolution equations M Cicognani, F Colombini | 25 | 2003 |

The Cauchy problem for 𝑝-evolution equations M Cicognani, F Colombini Transactions of the American Mathematical Society 362 (9), 4853-4869, 2010 | 24 | 2010 |

The global Cauchy problem for a vibrating beam equation A Ascanelli, M Cicognani, F Colombini Journal of Differential Equations 247 (5), 1440-1451, 2009 | 21 | 2009 |

The Log-effect for p-evolution type models M Cicognani, F Hirosawa, M Reissig Journal of the Mathematical Society of Japan 60 (3), 819-863, 2008 | 20 | 2008 |

Loss of regularity for p-evolution type models M Cicognani, F Hirosawa, M Reissig Journal of mathematical analysis and applications 347 (1), 35-58, 2008 | 18 | 2008 |

The Cauchy problem for a class of Kovalevskian pseudo-differential operators R Agliardi, M Cicognani Proceedings of the American Mathematical Society 132 (3), 841-845, 2004 | 18 | 2004 |

Coefficients with unbounded derivatives in hyperbolic equations M Cicognani Mathematische Nachrichten 276 (1), 31-46, 2004 | 17 | 2004 |

On a class of unsolvable operators M Cicognani, L Zanghirati Annali della Scuola Normale Superiore di Pisa-Classe di Scienze 20 (3), 357-369, 1993 | 17 | 1993 |

The Cauchy problem for nonlinear hyperbolic equations with Levi condition M Cicognani, L Zanghirati Bulletin des sciences mathematiques 123 (6), 413-435, 1999 | 16 | 1999 |

Strictly hyperbolic equations with coefficients low-regular in time and smooth in space M Cicognani, D Lorenz Journal of Pseudo-Differential Operators and Applications 9 (3), 643-675, 2018 | 15 | 2018 |

Operators of p-evolution with nonregular coefficients in the time variable R Agliardi, M Cicognani Journal of Differential Equations 202 (1), 143-157, 2004 | 15 | 2004 |

On the strictly hyperbolic equations which are Hölder continuous with respect to time M Cicognani Preprint, 1998 | 15 | 1998 |

Energy estimate and fundamental solution for degenerate hyperbolic Cauchy problems A Ascanelli, M Cicognani Journal of Differential Equations 217 (2), 305-340, 2005 | 14 | 2005 |

Analytic Regularity for Solutions of Non-Linear Weakly Hyperbolic Equations M Cicognani, L Zanghirati Bollettino della Unione Matematica Italiana-B, 643-680, 1997 | 14 | 1997 |

On Schrödinger type evolution equations with non-Lipschitz coefficients M Cicognani, M Reissig Annali di Matematica Pura ed Applicata 190, 645-665, 2011 | 10 | 2011 |

Schrödinger equations of higher order A Ascanelli, M Cicognani Mathematische Nachrichten 280 (7), 717-727, 2007 | 10 | 2007 |

Loss of derivatives in evolution Cauchy problems M Cicognani, F Colombini ANNALI DELL'UNIVERSITA'DI FERRARA 52, 271-280, 2006 | 9 | 2006 |