Ehrhard, A. Le symbolisme d'Ibsen. In Ehrhard, A. Henrik Ibsen.... p. 339-54.

Faguet, E. Symbolism in Ibsen's dramas. Internat. 8:839-41. Dec. 1903.

Grummann, P. H. Ibsen's symbolism in The master builder, and When we dead awaken. Nebraska Univ. Studies 10:235-41. 1910.

Lee, J. Ibsen secret.

Sturtevant, A. M. Some phases of Ibsen's symbolism. Pub. Soc. Adv. of Scand. study v. 2. no. 1. p. 25-45. Oct. 1914.

Tridon. A. Symbolism of Peer Gynt. Theatre (N.Y.) 7:48-9. Feb. 1907.

Technique. See also Art

Colbron, G. T. Ibsen and the stage system. Critic 49:41-5. July 1906.

Hamilton, C. Theory of the theatre. N.Y. 1910. p. 18 seq.

Henderson, A. How Ibsen made his plays. Bookm. 31: 492-7. July 1910.