The following resources about Tania function and [Doya function] are loaded:
http://www.ils.uec.ac.jp/~dima/2013taniadoya.pdf D.Kouznetsov. Tania Funciton and Doya Function, 2013. Preprint in the format of Journal "Optical Review".
http://mizugadro.mydns.jp/t/index.php/Tania_function )
http://mizugadro.mydns.jp/t/index.php/Doya_function )
http://en.citizendium.org/wiki/Tania_function
Sorry, the previously announced URL
http://tori.ils.uec.ac.jp/e/2013taniadoya is no more avialable.