Pinus nigra (Austrian Pine)
- Description with images.
- http://www.hort.uconn.edu/plants/p/pinnig/pinnig1.html

Pinus nigra
- Detailed taxonomic notes and physical description of European Black Pine. Includes images plus facts on range and ethnobotany.
- http://www.conifers.org/pi/pin/nigra.htm

Pinus nigra Arnold (European Black Pine)
- Information from the U.S. Forest Service silvics manual.
- http://www.na.fs.fed.us/spfo/pubs/silvics_manual/Volume_1/pinus/nigra.htm