1. W.C. Drinkard, R.V.J. Lindsey, US 3496215 (DuPont), February 17, 1970;
2. W.C. Drinkard, US 3496218 (DuPont), February 17, 1970;
3. W.C. Drinkard, R.J. Kassal, US 3496217 (DuPont), February 17, 1970.
4. HOMOGENEOUS NICKEL-CATALYZED OLEFIN HYDROCYANATION