@Work{OL19669249W,
    title: {Percy Jackson's Greek heroes},
    author: {Rick Riordan},
    first_publish_year: {2015}
}

@Work{OL16808392W,
    title: {The House of Hades},
    author: {Rick Riordan},
    first_publish_year: {2013}
}

@Work{OL17181541W,
    title: {The Sword of Summer},
    author: {Rick Riordan},
    first_publish_year: {2015}
}

@Work{OL15980243W,
    title: {The Son of Neptune},
    author: {Rick Riordan},
    first_publish_year: {2011}
}

@Work{OL16664287W,
    title: {The Mark of Athena},
    author: {Rick Riordan},
    first_publish_year: {2011}
}

@Work{OL15401200W,
    title: {The Lost Hero},
    author: {Rick Riordan},
    first_publish_year: {2010}
}

@Work{OL18147673W,
    title: {The Ship of the Dead},
    author: {Rick Riordan and John Rocco},
    first_publish_year: {2017}
}

@Work{OL17059943W,
    title: {The Blood of Olympus},
    author: {Rick Riordan},
    first_publish_year: {2001}
}

@Work{OL17847294W,
    title: {magnus chase and the hammer of thor},
    first_publish_year: {2003}
}