1.
The Artistic Evolution of Japanese Tattoo Culture
https://www.researchgate.net/publication/336650255_The_Artistic_Evolution_of_Japanese_Tattoo_Culture

2.

Tattooing as a Method of Acupoint Stimulation and Potential Therapeutic

Intervention
https://www.researchgate.net/publication/331560037_Tattooing_as_a_Method_of_Acupoint_Stimulation_and_Potential_Therapeutic_Intervention

3.
ANCIENT METHODS OF SKIN INTERVENTION – ACUPUNCTURE PREDECESSORS?
https://www.researchgate.net/publication/317332826_ANCIENT_METHODS_OF_SKIN_INTERVENTION_-_ACUPUNCTURE_PREDECESSORS

4. 
Ice Age Acupuncture? Tattoo
https://www.acupuncturetoday.com/mpacms/at/article.php?id=27608

5.
The Power to Cure: A Brief History of Therapeutic Tattooing
https://www.academia.edu/8726735/_2013_The_Power_to_Cure_A_Brief_History_of_Therapeutic_Tattooing

6. 
A medical report from the stone age?
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(98)12242-0/fulltext

7. 
Can Tattoos Be Medicinal?
https://www.smithsonianmag.com/science-nature/can-tattoos-be-medicinal-156450609/

8.
One Art Two Fates: A Comparative Study on Thailand's Sak Yant and the Philippines' Batek
https://www.academia.edu/36779685/One_Art_Two_Fates_A_Comparative_Study_on_Thailands_Sak_Yant_and_the_Philippines_Batek

9.
Human in Sak Yant....
https://cuir.car.chula.ac.th/dspace/bitstream/123456789/50139/1/5787591020.pdf

10.
SAK YANT: THE TRANSITION FROM INDIC YANTRAS TO THAI “MAGICAL” BUDDHIST TATTOOS
http://www.fairfun.net/my3/panna_my/b%20buddhism/PDFe-Books/SakYantThaiMagicalBuddhistTatoos-AngelaMarieMay.pdf


11.
Slavik Light Symbols
https://books.google.co.jp/books?id=vTjzBQAAQBAJ&pg=PT5&lpg=PT5&dq=black+sun+slavic&source=bl&ots=6ZZOeP0_Sg&sig=ACfU3U24_k27HMdM15P2mtQ7u4X3MqV51A&hl=en&sa=X&ved=2ahUKEwi9uZ6kuZzmAhU_xosBHSlCD1UQ6AEwE3oECGIQAQ#v=onepage&q=black%20sun%20slavic&f=false

12.
The Tattoo System in the Ancient Iranian World
https://www.academia.edu/7519144/The_Tattoo_System_in_the_Ancient_Iranian_World_Zurich_2013_

13.
Decoration or degradation: the perception of domestic and pagan tattoo practices in Graeco-Roman literature from 5th century BC to 5th century AD.
https://www.academia.edu/35480194/Decoration_or_degradation_the_perception_of_domestic_and_pagan_tattoo_practices_in_Graeco-Roman_literature_from_5th_century_BC_to_5th_century_AD

14. 
SKETCH

http://www.snapstouch.com/Sketch.aspx