1. P. Claus andW. Vycudilik, Tetrahedron Lett.1968, 3607;P. Claus andW. Vycudilik, Mh. Chem.101, 396, 405 (1970);
2. P. Claus, W. Rieder, andW. Vycudilik ibid., Mh. Chem.102, 1571 (1971);
3. P. Claus andW. Rieder, ibid., Mh. Chem.103, 1163 (1972);
4. P. K. Claus, P. Hofbauer, andW. Rieder, Tetrahedron Lett.1972, 3319;P. K. Claus, H. A. Schwarz, W. Rieder, andW. Vycudilik, Phosphorus and Sulfur1, 11 (1976); see also Dissertation H. A. Schwarz, University of Vienna, 1972.
5. P. K. Claus, W. Rieder, andF. W. Vierhapper, Mh. Chem.109, 609 (1978).