SELF-MODIFYING NETS, A NATURAL EXTENSION OF PETRI NETS.VALK R.1978; LECTURE NOTES COMPUTER SCI.; GERM.; DA. 1978; NO 62; PP. 464-476; BIBL. 12 REF.; (AUTOM. LANG. PROGRAM. COLLOQ. 5; UDINE; 1978)Conference Paper

MINIMAL MACHINES WITH SEVERAL INITIAL STATES ARE NOT UNIQUE.VALK R.1976; INFORM. AND CONTROL; U.S.A.; DA. 1976; VOL. 31; NO 2; PP. 193-196; BIBL. 1 REF.Article

GENERALIZATIONS OF PETRI NETSVALK R.1981; LECT. NOTES COMPUT. SCI.; ISSN 0302-9743; DEU; DA. 1981; NO 118; PP. 140-155; BIBL. 28 REF.Conference Paper

REALISI ERUNGEN ALLGEMEINER SYSTEME. = REALISATION DE SYSTEMES GENERAUXVALK R.1976; BER. GESELLSCH. MATH. DATENVERARBEIT.; DTSCH.; DA. 1976; NO 107; PP. 1-132; BIBL. 4 P. 1/2Serial Issue

FINITE COVERINGS OF LARGE SYSTEMS.VALK R.1975; IN: FORMATOR SYMP. MATH. METHODS ANAL. LARGE-SCALE SYST. 2. PROC.; PRAGUE; 1974; PRAGUE; ACADEMIA; DA. 1975; PP. 91-103; BIBL. 8 REF.Conference Paper

SELF-MODIFYING NETS.VALK R.sdIN: RESEAUX PETRI. JOURN. ETUD. RESEAUX PETRI; PARIS; 1977; PARIS; INST. PROGRAMMATION; DA. S.D.; PP. 161-197; ABS. FR.; BIBL. 12 REF.Conference Paper

ON SOME ELEMENTARY PROPERTIES OF UNIFORM AUTOMATA.VALK R.1975; REV. FR. AUTOMAT. INFORMAT. RECH. OPERAT., R, INFORMAT. THEOR.; FR.; DA. 1975; VOL. 9; NO 2; PP. 39-54; ABS. FR.; BIBL. 7 REF.Article

DISCRETE AND CONTINUOUS REALIZATIONS OF GENERAL TIME SYSTEMS.VALK R.1974; J. CYBERN.; U.S.A.; DA. 1974; VOL. 4; NO 4; PP. 43-52; BIBL. 11 REF.Article

Infinite behaviour of Petri netsVALK, R.Theoretical computer science. 1983, Vol 25, Num 3, pp 311-341, issn 0304-3975Article

FORMAL PROPERTIES OF PLACE/TRANSITION NETSJANTZEN M; VALK R.1980; LECTURE NOTES COMPUTER SCI.; DEU; DA. 1980; NO 84; PP. 165-212; BIBL. 41 REF.Conference Paper

REDUCTIONS OF NETS AND PARALLEL PROGRAMSBERTHELOT G; ROUCAIROL G; VALK R et al.1980; LECTURE NOTES COMPUTER SCI.; DEU; DA. 1980; NO 84; PP. 277-290; BIBL. 14 REF.Conference Paper

The residue of vector sets with applications to decidability problems in Petri netVALK, R; JANTZEN, M.Acta informatica. 1985, Vol 21, Num 6, pp 643-674, issn 0001-5903Article

The physical therapeutic aftercare of patients with fractures : A descriptionVAN DER VALK, R. W. A; DEKKER, J.European journal of physical medicine & rehabilitation. 1996, Vol 6, Num 4, pp 115-121, issn 1017-6721Article

Petri Nets as token objects: An introduction to Elementary Object NetsVALK, R.Lecture notes in computer science. 1998, pp 1-25, issn 0302-9743, isbn 3-540-64677-9Conference Paper

Slow ventilatory dynamics after isocapnic hypoxia and voluntary hyperventilation in humans : effects of isofluraneDAHAN, A; VAN KLEEF, J; VAN DEN ELSEN, M et al.British Journal of Anaesthesia. 1996, Vol 76, Num 3, pp 374-381, issn 0007-0912Article

Daily exhaled nitric oxide measurements and asthma exacerbations in childrenDER VALK, R. J. P. Van; BARALDI, E; STERN, G et al.Allergy (Copenhagen). 2012, Vol 67, Num 2, pp 265-271, issn 0105-4538, 7 p.Article

Labeling of ethambutol with ⁹⁹mTc using a new reduction procedure. Pharmacokinetic study in the mouse and ratCAUSSE, J. E; PASQUALINI, R; CYPRIANI, B et al.Applied radiation and isotopes. 1990, Vol 41, Num 5, pp 493-496, issn 0969-8043, 4 p.Article

Childhood wheezing phenotypes and FeNO in atopic children at age 8VAN DER VALK, R. J. P; CAUDRI, D; SAVENIJE, O et al.Clinical and experimental allergy (Print). 2012, Vol 42, Num 9, pp 1329-1336, issn 0954-7894, 8 p.Article

Duration and exclusiveness of breastfeeding and childhood asthma-related symptomsSONNENSCHEIN-VAN DER VOORT, A. M. M; JADDOE, V. W. V; VAN DER VALK, R. J. P et al.The European respiratory journal. 2012, Vol 39, Num 1, pp 81-89, issn 0903-1936, 9 p.Article

Interaction of a 17q12 variant with both fetal and infant smoke exposure in the development of childhood asthma-like symptomsVAN DER VALK, R. J. P; DUIJTS, L; KOPPELMAN, G. H et al.Allergy (Copenhagen). 2012, Vol 67, Num 6, pp 767-774, issn 0105-4538, 8 p.Article