Hassler, J. O. (1916). Plane nets periodic of period 3 under the Laplacian transformation. Tipografia mathematica.
Chicago Style (17th ed.) CitationHassler, Jasper Ole. Plane Nets Periodic of Period 3 Under the Laplacian Transformation. Palermo: Tipografia mathematica, 1916.
MLA (9th ed.) CitationHassler, Jasper Ole. Plane Nets Periodic of Period 3 Under the Laplacian Transformation. Tipografia mathematica, 1916.
Warning: These citations may not always be 100% accurate.