| Acid-soluble nucleotides of cow's, goat's and sheep's milks, at different stages of lactation | Journal of Dairy Research | 1981 | 72 |
| Intracerebral self-administration of amphetamine by rhesus monkeys | Neuroscience Letters | 1981 | 51 |
| Applications of bladder ultrasonography. I. Bladder content and residue | Journal of Urology | 1981 | 49 |
| Activación de una sepiolita con disoluciones diluidas de NO3H y posteriores tratamientos termicos: I. Estudio de la superficie específica | Clay Minerals | 1981 | 39 |
| Pepsinogen denaturation is not a two-state transition | FEBS Letters | 1981 | 35 |
| Activation of a sepiolite with dilute solutions of HNO3 and subsequent heat treatments: II. Determination of surface acid centres | Clay Minerals | 1981 | 31 |
| Vitamin production in relation to phosphate solubilization by soil bacteria | Soil Biology and Biochemistry | 1981 | 27 |
| Activation of a sepiolite with dilute solutions of HNO3 and subsequent heat treatments: III. Development of porosity | Clay Minerals | 1981 | 24 |
| Different thermal behavior of neonatal hepatic and cerebral 3-hydroxy-3-methylglutaryl-CoA reductase | Lipids | 1981 | 20 |
| The determination of acid-soluble nucleotides in milk by improved enzymic methods: a comparison with the ion-exchange column chromatography procedure | Journal of the Science of Food and Agriculture | 1981 | 19 |
| The mechanism of the increase in renal ammoniagenesis in the rat with acute metabolic acidosis | FEBS Letters | 1981 | 15 |
| C-heterochromatin variation in the genus Eumigus (Orthoptera: Pamphagoidea) | Genetica | 1981 | 14 |
| Development of porosity and surface heterogeneity upon air activation of graphitized carbon black | Carbon | 1981 | 13 |
| Genetic variability in Muscari comosum (Liliaceae). I. A comparative analysis of chromosome polymorphisms in Spanish and Aegean populations | Heredity | 1981 | 13 |
| Irreversible thermodynamics of transport processes through porous media composed of particles of different size | Journal of Colloid and Interface Science | 1981 | 13 |
| Flow regime and bedforms in a ridge and runnel system, S.E. Spain | Sedimentary Geology | 1981 | 11 |
| Biliary secretion in conscious rabbits: role of the enterohepatic circulation of bile salts and of the gall bladder | Quarterly Journal of Experimental Physiology (Cambridge, England) | 1981 | 10 |
| Boron, copper, iron, manganese and zinc contents in leaves of flowering sunflower plants (Helianthus annuus, L.), grown with different boron supplies | Plant and Soil | 1981 | 10 |
| Polysomy and supernumerary isochromosomes in the grasshopper Omocestus bolivari (Chopard) | Heredity | 1981 | 8 |
| Evolution of ethylene by sulphur dust addition | Physiologia Plantarum | 1981 | 7 |
| About the Karyotype Of Microtus Nivalis Martins (Rodentia, Microtinae) | Caryologia | 1981 | 6 |
| Chromosomal rearrangements and karyotypic evolution in Decticinae (Orthoptera: Tettigonioidea). | Cytologia | 1981 | 6 |
| Frequency of chromosome polymorphism for pericentric inversions and B-chromosomes in Spanish populations of Rattus rattus frugivorus | Genetica | 1981 | 6 |
| Basal biliary secretion in conscious chicken and role of enterohepatic circulation | Comparative Biochemistry and Physiology A, Comparative Physiology | 1981 | 5 |
| Degeneration and regeneration processes in experimental facial nerve paralysis | Acta Oto-Laryngologica | 1981 | 5 |
