Borges, A. R. J. <br/><br/>
the frequency response of floater - type anemographs: veloc-ity fluctuations in the direction of mean speed / A. R. J. -Borges. 

 - Lisboa, Portugal : Laboratorio Nacional de Engenharia Civil 
 - 7 p. 
 - Memoria; No.314 / Laboratorio Nacional de Engenharia Civil .