Schouten J.A., van der Kulk W. — Pfaffs Problem and Its Generalizations | vi, 67, 73, 82, 88, 91, 92, 94, 96, 102, 103, 107, 109, 115, 145, 148, 151, 152, 153, 160, 172, 173, 175, 177, 179, 180, 184, 195, 199, 200, 210, 224, 229, 246, 251, 253, 255, 262, 273, 306, 315, 319, 349, 352, 416 |