def compute_missing_citations(cittopics, outcitations):
    """
    This function is used to compute the missing citations for a paper
    :param cittopics: the CitTopic
    :param outcitations: the list of records including outcitations
    :return: a list of missing citations
    """
    missing = []
    for c in cittopics:
        if c not in outcitations:
            missing.append(c)

    return missing