[Article] A possible generating algorithm of the Voynich manuscript

[Anton]

Often what I do is write both names if there are two, and first name, et al if there are more than two, but that's just a matter of personal preference.

Usually up to three or even four authors are mentioned expressly, and if there are 4-5 or more then it goes in the "et alii" fashion. "Et alii" is really for those cases when the author list runs beyond the horizon. It's always better to mention the authors expressly. When it is A and B, it's unfair to  have it "A et. al.", let alone it violates the grammar.