! Alkilamin<ref>{{Cite journal|last=Hall | first = H. K. | title = Correlation of the Base Strengths of Amines | doi = 10.1021/ja01577a030 | journal = Journal of the American Chemical Society | volume = 79 | issue = 20 |pages=5441-5444 |year=1957 | pmid = | pmc =|pages=5441-5444}}</ref> or aniline<ref>{{Cite journal|last=Kaljurand | first = I. | last2=Kütt | first2 = A. | last3=Sooväli | first3 = L. | last4=Rodima | first4 = T. | last5=Mäemets | first5 = V. | last6=Leito | first6 = I. | last7=Koppel | first7 = I. A. | doi = 10.1021/jo048252w | title = Extension of the Self-Consistent Spectrophotometric Basicity Scale in Acetonitrile to a Full Span of 28 pKa Units: Unification of Different Basicity Scales | journal = The Journal of Organic Chemistry | volume = 70 | issue = 3 |pages=1019-1028 |year=2005 | pmid = 15675863| pmc =|pages=1019-1028}}</ref>
