1. Atlas van de kankersterfte in Nederland;Centraal Bureau voor de Statistiek;Staatsuitgeverij 's-Gravenhage,1980
2. Surgical treatment of invasive carcinoma of the uterine cervix. Thesis;Ketting,1980
3. Pj Cole, De Roberts, Sf Davies, PK. Knight, A simple, oral antimicrobial regimen effective in severe chronic bronchial suppuration associated with culturable Haemophilus influenzae., J Antimicrob Chemother ((in press)).
4. Use of selective media in bacteriological investigation of patients with chronic suppurative respiratory infection;Roberts;Lancet,1980