H. WOLDA, “SEASONAL VARIATION IN THE ABUNDANCE OF THE PEST OF CORN Peregrinus maidis ASHMEAD) (HOMOPTERA: DELPHACIDAE) IN PANAMA”, Rev. Colomb. Entomol., vol. 8, no. 3-4, pp. 35–39, Dec. 1982, doi: 10.25100/socolen.v8i3-4.10314.