{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "type": "object",
    "properties": {
        "authors": {
            "type": "array",
            "minItems": 1,
            "_uniqueItems": true,
            "items": {
                "type": "object",
                "properties": {
                    "name": {
                        "type": "string"
                    },
                    "email": {
                        "type": "string",
                        "format": "email"
                    }
                },
                "required": [
                    "name"
                ]
            }
        },
        "license": {
            "type": "string"
        },
        "title": {
            "type": "string"
        },
        "description": {
            "type": "string"
        }
    }
}