TY  - JOUR 
T1  - The derivation of algorithms to compute elliptic integrals of the first and second kind by Landen-transformation
JO  - Boletim de Ciências Geodésicas
A1  - Norbert, Rösch
SN  - 1982-2170
UL  - 10.1590/S1982-21702011000100001
VL  - 17 
Y1  - 2011
PB  - Brasil 
ER  -