The Diazo Method

Coffman J. W. : Technology of the diazotype process. Tecnifax Corporation, Holyoke, Massachusetts.

Lilieouist B. Welander U. : Colour in subtraction angiography. Preliminary report. Acta radiol. Diagnosis 8 (1969), 1.

Lilieouist B. Welander U. Colour combination images in cerebral angiography. Neuroradiology 1 (1970), 39.

Mutter E. : Kompendium der Photographie Verlag für Radio-Foto-Kinotechnik GmbH, Berlin-Borsigwalde 1963.

Müller E. R. : Diazotypiens principer. In: Fotografisk handbok, Kap. 81. (In Swedish.) Edited by Bäckström H. . Natur & Kultur, Stockholm 1942.

Welander U. : Multicolor combination images in subtraction angiography. A new photographic method and its applications. Acta radiol. (1969), Suppl. No. 290.