More documentation improvements

Change-Id: I34484d6df2e91eceb809aa97d189f8ea4918d8ea
diff --git a/man/RKorAPClient-package.Rd b/man/RKorAPClient-package.Rd
index a93a28f..e60c721 100644
--- a/man/RKorAPClient-package.Rd
+++ b/man/RKorAPClient-package.Rd
@@ -18,7 +18,15 @@
   You can learn more about 'KorAP' and use it directly on 'DeReKo' at <https://korap.ids-mannheim.de/>.
 }
 \references{
-Kupietz, Marc / Diewald, Nils / Margaretha, Eliza (2020): RKorAPClient: An R package for accessing the German Reference Corpus DeReKo via KorAP. In: Calzolari, Nicoletta, Frédéric Béchet, Philippe Blache, Khalid Choukri, Christopher Cieri,  Thierry Declerck, Sara Goggi, Hitoshi Isahara, Bente Maegaard, Joseph Mariani, Hélène Mazo, Asuncion Moreno, Jan Odijk, Stelios Piperidis (eds.): [Proceedings of The 12th Language Resources and Evaluation Conference (LREC 2020)](http://www.lrec-conf.org/proceedings/lrec2020/LREC-2020.pdf). Marseille: European Language Resources Association (ELRA), 7017-7023. <http://www.lrec-conf.org/proceedings/lrec2020/pdf/2020.lrec-1.867.pdf>
+Kupietz, Marc / Diewald, Nils / Margaretha, Eliza (2020):
+RKorAPClient: An R package for accessing the German Reference Corpus DeReKo
+via KorAP. In: Calzolari, Nicoletta, Frédéric Béchet, Philippe Blache,
+Khalid Choukri, Christopher Cieri,  Thierry Declerck, Sara Goggi,
+Hitoshi Isahara, Bente Maegaard, Joseph Mariani, Hélène Mazo,
+Asuncion Moreno, Jan Odijk, Stelios Piperidis (eds.):
+Proceedings of The 12th Language Resources and Evaluation Conference (LREC 2020)
+Marseille: European Language Resources Association (ELRA), 7017-7023.
+\url{http://www.lrec-conf.org/proceedings/lrec2020/pdf/2020.lrec-1.867.pdf}
 }
 \seealso{
 Useful links:
diff --git a/man/association-score-functions.Rd b/man/association-score-functions.Rd
index 6591f1b..7517561 100644
--- a/man/association-score-functions.Rd
+++ b/man/association-score-functions.Rd
@@ -42,6 +42,18 @@
 Functions to calculate different collocation association scores between
 a node (target word) and words in a window around the it.
 The functions are primarily used by \code{\link{collocationScoreQuery}}.
+
+\bold{pmi}: pointwise mutual information
+
+\bold{mi2}: pointwise mutual information squared (Daille 1994), also referred to as mutual dependency
+(Thanopoulos et al. 2002)
+
+\bold{mi3}: pointwise mutual information cubed (Daille 1994), also referred to as log-frequency biased mutual dependency)
+(Thanopoulos et al. 2002)
+
+\bold{logDice}: log-Dice coefficient, a heuristic measure that is popular in lexicography (Rychlý 2008)
+
+\bold{ll}: log-likelihood (Dunning 1993) using Stefan Evert's (2004) simplified implementation
 }
 \examples{
 \donttest{
@@ -64,6 +76,6 @@
 Dunning, T. (1993): Accurate methods for the statistics of surprise and coincidence. Comput. Linguist. 19, 1 (March 1993), 61-74.
 
 Evert, Stefan (2004): The Statistics of Word Cooccurrences: Word Pairs and Collocations. PhD dissertation, IMS, University of Stuttgart. Published in 2005, URN urn:nbn:de:bsz:93-opus-23714.
-Free PDF available from <http://purl.org/stefan.evert/PUB/Evert2004phd.pdf>
+Free PDF available from \url{http://purl.org/stefan.evert/PUB/Evert2004phd.pdf}
 }
 \concept{association-score-functions}