CONTRIBUTION OF THE FLORA OF CUBA: OSMUNDACEAE, SCHIZAEACEAE AND GLEICHENIACEAE (PTERIDOPHYTA).DUEK JJ.1976; FEDDES REPERT.; ALLEM.; DA. 1976; VOL. 87; NO 5; PP. 325-360; ABS. ALLEM.; BIBL. 19 REF.Article

A TAXONOMICAL REVISION OF THE GREATER ANTILLES SPECIES OF THE FERN FAMILY GLEICHENIACEAE.DUEK JJ.1978; ADANSONIA; FR.; DA. 1978; VOL. 17; NO 3; PP. 359-380; ABS. FR.; BIBL. 18 REF.Article

A NEWLY RECOGNIZED GLEICHENIA HYBRID FROM CUBADUEK JJ.1974; AMER. FERN J.; U.S.A.; DA. 1974; VOL. 64; NO 3; PP. 74-76; BIBL. 3REF.Article

A TAXONOMICAL MONOGRAPH OF ANEMIA SUBGENUS ANEMIORRHIZA (FILICINAE)DUEK JJ.1980; FEDDES REPERT.; DDR; DA. 1980; VOL. 91; NO 1-2; PP. 69-87; ABS. GER; BIBL. 13 REF.Article

A NEW SPECIES AND A NEW VARIETY IN THE FERN FLORA OF CUBA = UNE ESPECE ET UNE VARIETE NOUVELLES DANS LA FLORE DE FOUGERES DE CUBADUEK JJ.1975; FEDDES REPERT.; ALLEM.; DA. 1975; VOL. 86; NO 9-10; PP. 521-523; ABS. ALLEM.Article

A COMPUTER AIDED ALGORITHM FOR IDENTIFICATION OF PLANT SPECIMENDUEK JJ; CUNEO P.1980; FEDDES REPERT.; ISSN 0014-8962; DDR; DA. 1980; VOL. 91; NO 5-6; PP. 309-312; ABS. GER; BIBL. 5 REF.Article

NEW COMBINATIONS IN THE FERN FLORA OF VENEZUELADUEK JJ; LELLINGER DB.1978; AMER. FERN J.; USA; DA. 1978; VOL. 68; NO 4; PP. 120Article

ANALYSIS OF CHARACTERS AND CLASSIFICATION BASED ON INFORMATION THEORY IN THE SPECIES OF THE GREATER ANTILLES OF THE FERN FAMILY GLEICHENIACEAE.DUEK JJ; ACEVEDO M; EDELMAN J et al.1978; FEDDES REPERT.; DDR; DA. 1978; VOL. 89; NO 1; PP. 31-41; ABS. ALLEM. ESP.; BIBL. 9 REF.Article

COMPARISONS OF SIMILARITY CRITERIA IN A NUMERICAL CLASSIFICATION OF THE FERN GENUS LYGODIUM IN AMERICADUEK JJ; SINHA SP; MUXICA L et al.1979; FEDDES REPERT.; DDR; DA. 1979; VOL. 90; NO 1-2; PP. 11-18; ABS. GER; BIBL. 9 REF.Article