Bibcode
                                    
                            Florido, E.; Battaner, E.; Sanchez-Saavedra, M. L.; Prieto, M.; Mediavilla, E.
    Referencia bibliográfica
                                    Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 251, July 15, 1991, p. 193-198.
Fecha de publicación:
    
                        7
            
                        1991
            
  Número de citas
                                    27
                            Número de citas referidas
                                    23
                            Descripción
                                    The morphological characteristics of corrugations in the disk shapes of
the edge-on galaxies NGC 4244 and 5023 are described to determine some
of the properties of these features. The corrugations are found to have
a 'central' area of high corrugation and wavelike structures of
increasing wavelengths emanating from the 'central' zone. If warps have
extragalactic sources, they can originate corrugations which propagate
inwards toward the central zone, but the cause of the initial
perturbation is not determined.