Berglund, P., Candelas, P., Ossa, X., Font, A., Hubsch, T., Jancic, D., & Quevedo, F. (1993). Periods for Calabi--Yau and Landau--Ginzburg Vacua.
Lua i Stíl Chicago (17ú heag.)Berglund, P., P. Candelas, X. Ossa, A. Font, T. Hubsch, D. Jancic, agus F. Quevedo. Periods for Calabi--Yau and Landau--Ginzburg Vacua. 1993.
Lua MLA (9ú heag.)Berglund, P., et al. Periods for Calabi--Yau and Landau--Ginzburg Vacua. 1993.
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