Links:
[1] http://www.aavso.org/category/tags/cepheid-variables?order=title&sort=asc
[2] http://www.aavso.org/category/tags/cepheid-variables?order=name&sort=asc
[3] http://www.aavso.org/category/tags/cepheid-variables?order=last_updated&sort=asc
[4] http://www.aavso.org/category/tags/cepheid-variables?order=type&sort=asc
[5] http://www.aavso.org/henrietta-leavitt-%E2%80%93-celebrating-forgotten-astronomer
[6] http://www.aavso.org/modern-observations-hubbles-first-discovered-cepheid-m31
[7] http://www.aavso.org/cepheid-variable-m31v1-hubbles-first-cepheid
[8] http://www.aavso.org/cosmic-distance-ladder
[9] http://www.aavso.org/vsots_rspup
[10] http://www.aavso.org/portrait-distant-cepheid
[11] http://www.aavso.org/m31v1s-light-curve-taking-shape
[3] 
