1. 1. G. A. Bliss, Fundamental existence theorems, The Princeton Colloquium, American Mathematical Society, 1913, Part I (reprinted from 1913 edition, 1934), 2 + 107 pp.
2. 2. G. A. Bliss, Calculus of variations, Carus Mathematical Monograph, no. 1, Chicago, Open Court, 1925 (second impression February 1927), 13 + 189 pp.
3. 3. G. A. Bliss, Variationsrechnung, a translation into German by F. Schwank of Bliss, The calculus of variations (above), Leipzig, Teubner, 1932, 8 + 127 pp.