In later centuries the sonnet form was returned to by successive waves of innovators in an attempt to breathe new life into Dutch poetry when, in their eyes, it had lost its way. For the generation of the 1880s it was Jacques Perk's sonnet sequence "Mathilde" which served as a rallying cry. In the early years of the new century, Martinus Nijhoff wrote notable sonnets before turning to more modernistic models. At the end of the 20th century, poets such as Gerrit Komrij and Jan Kal used the sonnet as part of their return to a new formalism in reaction to the experimentalism of earlier decades.