Jeanne-Nicole Mellon Saint-Laurent and Nathan P. Gibson (eds.), "A bibliography of Syriac ascetic and mystical literature" in A bibliography of Syriac ascetic and mystical literature last modified July 22, 2016, http://syriaca.org/bibl/2169
    
        
            
                
                    
                        Grigory
                        Kessel
                    
                    
                        Karl
                        Pinggéra
                    
                    A bibliography of Syriac ascetic and mystical literature
                    http://syriaca.org/bibl/2169
                    751
                    http://www.worldcat.org/oclc/713180416
                    978-90-429-2457-4
                    
                        Leuven; Walpole, MA
                        Peeters
                        2011