Add a CITATION file (fixes #309)

4 files changed, 27 insertions, 7 deletions

diff --git a/CITATION b/CITATION
new file mode 100644
index 00000000..82643d84
--- /dev/null
+++ b/CITATION
@@ -0,0 +1,14 @@
+To cite PROJ in publications use:
+
+  PROJ contributors (2018). PROJ coordinate transformation software
+  library. Open Source Geospatial Foundation. URL http://proj4.org/.
+
+A BibTeX entry for LaTeX users is
+
+  @Manual{,
+    title = {{PROJ} coordinate transformation software library},
+    author = {{PROJ contributors}},
+    organization = {Open Source Geospatial Foundation},
+    year = {2018},
+    url = {http://proj4.org/},
+  }
diff --git a/HOWTO-RELEASE b/HOWTO-RELEASE
index d020d486..fbf99670 100644
--- a/HOWTO-RELEASE
+++ b/HOWTO-RELEASE
@@ -46,27 +46,29 @@
 
 7) Update NEWS file with summary of release changes.
 
-8) If this is a major release, prepare a branch.
+8) Update the year in CITATION
+
+9) If this is a major release, prepare a branch.
 
    git checkout -b 5.0
 
-9) Tag the release
+10) Tag the release
 
    git tag 5.0.0
 
-10) Do a "make dist-all" in the proj root directory.  After some grinding
+11) Do a "make dist-all" in the proj root directory.  After some grinding
    this should result in files like proj-4.4.3.tar.gz and proj-4.4.3.zip
    being created.  These are full source distributions.
 
-11) Put these in the proj ftp area on /osgeo/download/proj on
+12) Put these in the proj ftp area on /osgeo/download/proj on
    download.osgeo.org.  This can be done via scp using a command like the
    following.
 
   scp proj-4.4.3.{tar.gz,zip} warmerdam@download.osgeo.org:/osgeo/download/proj
 
-12) Announce the new release on the PROJ.4 and MetaCRS mailing lists.
+13) Announce the new release on the PROJ.4 and MetaCRS mailing lists.
 
-13) Issue a new release report on GitHub:
+14) Issue a new release report on GitHub:
 
    https://github.com/OSGeo/proj.4/releases/new
 
diff --git a/Makefile.am b/Makefile.am
index f4a82f9c..39a1201b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,6 +1,6 @@
 SUBDIRS	=	src man nad jniwrap cmake test
 
-EXTRA_DIST = makefile.vc nmake.opt CMakeLists.txt
+EXTRA_DIST = makefile.vc nmake.opt CMakeLists.txt CITATION
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = proj.pc
diff --git a/README.md b/README.md
index 32e3df66..981be967 100644
--- a/README.md
+++ b/README.md
@@ -144,3 +144,7 @@ where PROJ will find them after installation. The default location of
 `PROJ_LIB` on UNIX-based systems is `/usr/local/share/proj` but it may
 be changed to a different directory. On Windows you have to define
 `PROJ_LIB` yourself.
+
+### Citing PROJ in publications
+
+See [CITATION](CITATION)