Octant rule

Zsila, Ferenc, András Gergely, and G. Szász. (1999) 1999. “Conformational Study On Ketamine By Circular Dichroism And Ultraviolet Spectroscopy”. Chirality 11: 280-285. http://www.scopus.com/inward/record.url?eid=2-s2.0-0032941223&partnerID=40&md5=3f26cb38b352463839e34e98609a36e1.
Gergely, András, Ferenc Zsila, P. Horváth, and G. Szász. (1999) 1999. “Determination Of Absolute Configuration Of Ketamine Enantiomers By Hplc- Cd-Uv Technique”. Chirality 11: 741-744. http://www.scopus.com/inward/record.url?eid=2-s2.0-0032712726&partnerID=40&md5=46675a1428b2cdc05ebe1ae34dbe8259.