1.
Recent observations on spent herrings and remarks on forecasting
Further observations on spent herring with remarks on fluctuations and oscillation
Nine years of continuous survey of an annual shoal of spent hering on the French-Belgian coast, 1930-39
Annual concentration of spent herring along the French and Belgian coasts in 1933-1934
2.
Recherches sur la biologie du hareng "guai" et sur sa pêcherie entre Ostende et le Cap Gris-Nez en 1930-1931