import { z } from "zod";
export declare const Doi: z.ZodString;
export declare const DoiPrefix: z.ZodString;
export declare const DoiSuffix: z.ZodString;
export type Doi = z.infer<typeof Doi>;
export type DoiPrefix = z.infer<typeof DoiPrefix>;
export type DoiSuffix = z.infer<typeof DoiSuffix>;