@Article{Seidel87a,
    author = {E. Seidel and G. S. DaCosta and P. Demarque},
    title = {Intermediate-Age Core Helium Burning Stars and the Distance to the Magellanic Clouds},
    journal = {Astrophys. J.},
    year = {1987},
    key = {Seidel87a},
    volume = {303},
    pages = {192}
}