Gravina, Richard and others | L'orthographe de la langue Tchouvok, esquisse préliminaire | 2004 | | Literacy and Education |
Golamadang, Thomas, Timothée Sabataï and Richard Gravina | L'orthgraphe de la langue guemzek | 2005 | | Literacy and Education |
Gravina, Richard | Mbuko Provisional Orthography | 1998 | | Linguistics |
Gravina, Richard and Robert Nelezek | Avinde ʼam sǝ mbuko | 1999 | | Literacy and Education |
Gravina, Richard | The phonological structure of Mbuko | | | Literacy and Education |
Gravina, Richard; Doumok, Elie | L'orthographe de la langue mere (Description préliminaire) | 2001 | | Literacy and Education |